Russian and Arabic don't have the same letters as English, so do I write in English letters or in Russian/Arabic?

I don't know, Smiley... Maybe both?

Okay :D

First is Arabic, second is Russian
Note:Arabic is written from right to left, zh is kinda pronounced like j

Hello! ~ Marhaba/مرحبا zdrastvoyte/Здравствуйте
My name's... ~ ana ismi.../انا اسمي... menya zovut.../Меня зовут ...
Nice to meet you! ~ forsa saideh/فرصة سعيدة pryiatno poznakomitsa/приятно познакомиться
Chair ~ شير / Шэр {Furniture chair: korsi/كرسي kreslo/кресло}
Cute ~ zaki/ زاكي {also means tasty} mylij{j=i}/милый
I love you! ~ ana bahebak/انا بحبك ya tebya loblyo/я тебя люблю
I hate you! ~ ana bakrahak/انا بكرهك ya tebya ne navizho/Я тебя ненавижу
Beautiful ~ jamileh/جميل prekrasnoye/прекрасное
House ~ beit/بيت dom/дом
How are you? ~ kef halak/كيف جالك kak dela/как дела
Where are you from? ~ men wen inta/من وين انت otkoda vy/Откуда Вы
How old are you ? ~ kam omrak/كم عمرك skolko vam let/сколько вам лет
Soulmates ~ rafaka alroh/رفقاء الروح yedinomyshleniki/единомышленники
Have a nice day ~ nahar saed/نهار سعيد pryiatnovo dnya/Приятного дня
Have fun ~ istamtei/استمتع veselytes/веселитесь
Happy Birthday! ~ eid melad saed/عيد ميلاد سعيد s dnyom rozhdenya/С Днем Рождения
Sorry/Excuse me! ~ asef{atather}/{اسف {عتذر izvenyte{prostyte}/извините{простите}

Hello! ~ Ahoj!
My name's... ~ Jmenuji se ...
Nice to meet you! ~ Ráda tě poznávám
Chair ~ Židle
Cute ~ Roztomilý
I love you! ~ Miluji tě
I hate you! ~ Nenávidím tě
Beautiful ~ Nádherná
House ~ Dů,
How are you? ~ Jak se máš ?
Where are you from? ~ Z kama pocházíš ?
How old are you ? ~ Kolik ti je let ?
Soulmates ~ Spřízněné duše
Have a nice day ~ Přeji hezký den
Have fun ~ Bav se
Happy Birthday! ~ Všechno nejlepší k narozeninám
Sorry/Excuse me! ~ Pardon

Hello! ~ Zdravo!
My name's... ~ Moje ime je...
Nice to meet you! ~ Drago mi je sto smo se upoznali!
Chair ~ stolica
Cute ~ sladak
I love you! ~ Volim te!
I hate you! ~Mrzim te!
Beautiful ~ prelijep
House ~ kuca
How are you? ~ Kako si?
Where are you from? ~ Odakle si?
How old are you ? ~ Koliko imas godina?/Koliko si star?
Soulmates ~ srodne duse
Have a nice day ~ Lijep dan!
Have fun ~ Zabavi se!/Lijepo se provedi!
Happy Birthday! ~ Srecan rodjendan!
Sorry/Excuse me! ~ Izvini!/Samo malo!

NOTE!
One sound per letter. You pronounce i like e, a something like r, dz pretty much like j...

Sara, Izvini is also a way of saying sorry in Russian :D

hey

Hello! ~ Buna/Salut!
My name's... ~ Numele meu este...
Nice to meet you! ~ Imi pare bine sa te cunosc.
Chair ~ scaun/mobila =furniture
Cute ~ dragut
I love you! ~ Te iubesc!
I hate you! ~ Te urasc!
Beautiful ~ frumos
House ~ casa
How are you? ~ Ce faci?
Where are you from? ~ De unde esti?
How old are you ? ~ Cati ani ai?
Soulmates ~ Suflete pereche
Have a nice day ~ Sa ai o zi placuta!
Have fun ~ Distreaza-te!
Happy Birthday! ~ La multi ani!
Sorry/Excuse me! ~ Scuza-ma/Imi pare rau.

In romanian there are not pronountion rules.

Hello! ~ Здравей!
My name's... ~ Казвам се..
Nice to meet you! ~ Приятно ми е да се запознаем!
Chair ~ Стол.
Cute ~ Сладък.
I love you! ~ Обичам те!
I hate you! ~ Мразя те!
Beautiful ~ Красив.
House ~ Къща.
How are you? ~ Как си?
Where are you from? ~ От къде си?
How old are you ? ~ На колко си години?
Soulmates ~ Сродни души.
Have a nice day ~ Приятен ден.
Have fun ~ Забавлявай се.
Happy Birthday! ~ Честит рожден ден.
Sorry/Excuse me! ~ Извини ме./ Моля


There. Good luck reading it. xD

Hello! ~ Hola
My name's... ~ Mi nombre es
Nice to meet you! ~ Gusto en conocerte
Chair ~ Silla
Cute ~ Tierno
I love you! ~ Te quiero
I hate you! ~ Te odio
Beautiful ~ Hermoso
House ~Casa
How are you? ~ Como estas?
Where are you from? ~ De donde eres?
How old are you ? ~ Cuantos años tienes?
Soulmates ~ Almas gemelas
Have a nice day ~ Que tengas un buen dia
Have fun ~ Diviertete
Happy Birthday! ~ Feliz cumpleaños
Sorry/Excuse me! ~ Lo siento/Perdon

There you have it, pretty easy don't you think?

Wow!! Most of your languages seem really difficult and natefusing. :/
Anyway, I'm adding every form of saying those words/sentences in portuguese I can remember. Formal or informal.

Hello! ~ Olá!/Oi!
My name's... ~ Meu nome é...
Nice to meet you! ~ Prazer!/Prazer em conhecê-lo(a)!/Prazer em te conhecer!
Chair ~ Cadeira
Cute ~ Gracinha (I guess.. kinda hard to translate)
I love you! ~ Eu te amo!/Eu amo você!
I hate you! ~ Eu te odeio!/Eu odeio você!
Beautiful ~ Bonito(a)/Lindo(a)/Belo(a)
House ~ Casa
How are you? ~ Como estás?/ Como está você?/Como você está?/Como tu tá?(VERY informal.. haha)
Where are you from? ~ De onde você é?
How old are you ? ~ Quantos anos você tem?
Soulmates ~ Almas gêmeas
Have a nice day ~ Tenha um bom dia
Have fun ~ Divirta-se
Happy Birthday! ~ Feliz aniversário!
Sorry/Excuse me! ~ Perdão!/Desculpa!/Desculpe-me!/Me desculpe!

Smiley, Villy and Katie I'm actually able to understand most of the word you wrote without looking at what they mean. It's awesome how similar our languages are. :D

Hello! ~ ওহে!
My name's... ~ আমার নাম
Nice to meet you! ~ দেখা হওয়ায় খুশী হলাম!
Chair ~ কেদারা
Cute ~ আকর্ষণীয়
I love you! ~ আমি তোমায় ভালোবাসি!
I hate you! ~ আমি আপনাকে ঘৃণা!
Beautiful ~ সুন্দর
House ~ গৃহ
How are you? ~ কেমন আছ তুমি?
Where are you from? ~ আপনি কোথা থেকে?
How old are you ? ~ আপনার বয়স কত?
Soul mates ~ জীবন সঙ্গী
Have a nice day ~ শুভ দিন
Have fun ~ মজা আছে
Happy Birthday! ~ শুভ জন্মদিন!
Sorry/Excuse me! ~ দুঃখিত / মাফ করবেন!

It's pretty easy...for me!?!?

@Sara: I also understood to your very well but Atie's language ... damn hard ;D

Villy, Sara, Julie. Your language = EASY
Atie, your language = 3....2....1... *head explodes*

Hello! ~ გამარჯობა /Gamarjoba
My name's... ~ ჩემი სახელია.../Chemi sakhelia
Nice to meet you! ~ სასიამოვნოა შენი გაცნობა/Sasiamovnoa Sheni Gacnoba
Chair ~ სკამი/Skami
Cute ~ საყვარელი/Sayvareli
I love you! ~ მიყვარხარ/Miyvarkhar
I hate you! ~ ვერგიტან/Vergitan
Beautiful ~ ლამაზი/Lamazi
House ~ სახლი/Sakhli
How are you? ~ როგორ ხარ? /Rogor Khar?
Where are you from? ~ საიდან ხარ?/ Saidan Khar?
How old are you ? ~ რამდენი წლის ხარ? / Ramdeni wlis khar?
Soulmates ~ სულიერი მეგობრები/ Sulieri megobrebi
Have a nice day ~ კარგი დღე გქონდეს!/Kargi Dghe gqondes
Have fun ~ იმხიარულე/Imkhiarule
Happy Birthday! ~ გილოცავ დაბადების დღეს!/Gilocav Dabadebis Dghes!
Sorry/Excuse me! ~ მაპატიე/Mapatie

------
First - Georgian letters and second - English letters

@Katie and Smiley Hahaha I know even I get confused with my language sometimes.lol :D

Mine Is French: (formal Canadian french)

Hello! ~ Bonjour!/Salut!/Hallo!
My name's... ~ Mon't nom est....
Nice to meet you! ~Contente de the Racontrer!
Chair ~Chaise
Cute ~Mignon
I love you! ~ Je t'aime!
I hate you! ~Je te hais!
House ~Maison
How are you? ~ Comment ça-vas?
Where are you from? ~ Où tu vien de?
How old are you ? ~ Qu'elle âge a-tu?
Soulmates ~ Soulmate(no translation that I know of)
Have a nice day ~ J'espère que tu a bonne journée
Have fun ~ Amusez-vous
Happy Birthday! ~ Bonne fête
Sorry/Excuse me! ~ Je m'excuse/pardon

greek
Hello! ~ Γεια!
My name's... ~ Με λένε / Το όνομα μου είναι
Nice to meet you! ~ Χάρηκα που σε γνωρισα
Chair ~ Καρέκλα
Cute ~ Γλύκα
I love you! ~ Σ'αγαπώ!
I hate you! ~ Σε μισώ!
Beautiful ~ Όμορφος
House ~ Σπίτι
How are you? ~ Πως είσαι ?
Where are you from? ~ Από που είσαι ?
How old are you ? ~ Πόσο χρονών είσαι ?
Soulmates ~ Ιδανικό Ταίρι / Αδελφές Ψυχές :P
Have a nice day ~ Καλή σου μέρα
Have fun ~ Καλή διασκέδαση
Happy Birthday! ~ Χρόνια πολλά!
Sorry/Excuse me! ~ Συγγνώμη/Sorry!

Well,mine is also French,but they're some differences with Aria,cause I live in France.

Hello! ~ Bonjour/Salut
My name's... ~ Mon nom est / Je m'appelle....
Nice to meet you! ~Ravie de te rencontrer
Chair ~Chaise
Cute ~Mignon
I love you! ~ Je t'aime!
I hate you! ~Je te hais/je te déteste!
House ~Maison
How are you? ~ Comment tu vas?
Where are you from? ~ D'où viens tu ?
How old are you ? ~ Quel âge as-tu?
Soulmates ~ Ames soeurs
Have a nice day ~ Passe une bonne journée
Have fun ~ Amuse toi
Happy Birthday! ~ Joyeux anniversaire !
Sorry/Excuse me! ~ Désolée/pardon/je m'excuse

I'm not Finnish, but some of my family is, so I'm gonna translate these into Finnish, ok?

Hello! ~ Hei!
My name's... ~ Minun nimeni on..
Nice to meet you! ~ Hauska tavata!
Chair ~ ... What? XD You mean like Chair, the seat? That is "tuoli", but they haven't got a separate word for the couple Chair. I think :P
Cute ~Söpö
I love you! ~ Minä rakastan sinua!
I hate you! ~ Minä vihaan sinua!
Beautiful ~ Kaunis
House ~ Hevonen
How are you? ~ Mitä kuuluu/miten voit?
Where are you from? ~ Mistä olet kotoisin?
How old are you ? ~ Minkä ikäinen olet/kuinka vanha olet?
Soulmates ~ Sielunkumppanit
Have a nice day ~ Hyvää päivänjatkoa
Have fun ~ Pidä hauskaa
Happy Birthday! ~ Hyvää syntymäpäivää!
Sorry/Excuse me! ~ Anteeksi!

:D