I’m moving to the countryside because the air there is much fresher than　 in the city.?

A.ones　　　　　 B.one　　　　　　　 C.that　　　　　　　 D.those

---I have finished my homework.　　　 ---___________.Let’s go to play tennis.

A. So have I 　　 B.I have so 　　　　 C. So did I 　　 D. So you do

The three sisters decided to hold a family party to ________ their parents’ silver wedding.

A. celebrate     　 B. memorize　 　 C. congratulate        D. welcome

When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks.

　 A. venture　 B. mission　 C. commission　 D. responsibility

—Has Sam finished his homework today??

—I have no idea.He _______it this morning.?

A.did　　　　　　　　　 B.has done?

C.was doing　　　　　　 D.had done

The city is no longer ________.

A. what it is

B. that it used to be

C. which it was

D. what it used to be

Passengers are permitted _____ only one piece of hand luggage onto the plane.

A.to carry　　　　 B. carrying　　　　　　 C. to be carried　　　 D. being carried

As soon as she entered her own room, she caught sight of the gift _____ by her father.

A. buying　　　　 B. bought　　　　

C. was bought　　　 D. being bought

He is so addicted to the Internet that he has been ___from all human contact.

　 A . cut down　 B. cut out　 C. cut off　 D. cut up