1.    I think we should keep away_____________ junk food.

A. to      B. from    C. with       D. for

5.    I have no_________ (机会)to study abroad.

4.    He gave me a warm____________ (拥抱).

3.    丁hat boy is_________ (哭).Do you know why?

2.    In Western countries teenagers can_______________ (应付.处理)their own lives very well.

5.   Stars can be seen by us at night (改为一般疑问句) 

__________stars_________  ________ by us at night?

4.   Many trees must be planted every year.(改为一般疑问句）

______  many trees________  ________ every year?

3.    Teenagers should be allowed to play games at school.(改为否定句）

Teenagers__________  ________  ________ to play games at school.

2.    We must turn off the mobile phones before the meeting starts.(改为被动语态）

The mobile phones_________  ___________  _________ _______ before the meeting starts.