How to ask "Who is he？" in Chinese

• 你是谁？
• 我是谁？
• 他是谁？
• 她是谁？

How to ask "Who is she？" in Chinese

• 你是谁？
• 我是谁？
• 他是谁？
• 她是谁？

How to ask "How old is he？" in Chinese

• 他五岁
• 他九岁
• 他几岁
• 他八岁

"Nǐ jǐ suì le ( 你几岁) "means

• how old am I

• How old is he

• How old are you

• How old is she

"生日快乐 (Shēngrì kuài lè) " means

• Happy Valentine's Day
• Happy Birthday
• Happy Easter
• Happy Chinese New Year

"I am 12 years old" means

• 我十一岁
• 我十二岁
• 我十岁
• 我九岁

"Thank you" in Chinese is

• 再见
• 谢谢
• 你好
• 你好吗

"她今 年 几岁 (tā jīn nián jǐ suì)  "  means 

• How old are you this year
• How old is she this year
• How old is he this year
• How old am I this year

“你今年几岁？” means

• I am 11  years old this year.
• How old are you this year?
• Wishing you a happy birthday
• She is teacher white.

When someone comes to your house, you should say:

• 对不起duìbuqǐ.
• 不客气búkèqi.
• 欢迎，请进。huānyíng, qǐngjìn. 
• 生日快乐