6/6/ Does your class have forty students?

Are there forty students in your class?

7/7/ That motorbike belongs to Mr Trung.

That is Mr Trung's motorbike

8/8/Does your father cycle to work? 

Does your father get to work by bike?

9/9/He goes to work at seven fifteen.

 He goes to work at a quarter past seven

10/10/ This exercise is very difficult and he can’t do it

 This exercise is too difficult for me do