Mary___________ computer science last year.

　　A. studies   B. studied  C. will study  D.studying

---My trousers are______ .

　 ---I’ll buy you a new pair.

　A. wore out　　  B. worn out　     C. wearing out　     D. sold out

In ten years, John __________ an astronaut.

　　A. will be   B. is       C. was   D. be

We like playing balls _______ basketball, football and tennis.

A. with　　　　    B. like　　　    C. in           D. of

There __________another English party next Sunday.

A. are going to be　　　　  B. was going to be

C. is going to be　　           D. were going to be