—Look！Somebody ________the sofa.

—Well，it wasn't me.I didn't do it.

A. is cleaning B. was cleaning

C. has cleaned D. had cleaned

—Alvin，are you coming with us?

—I'd love to，but something unexpected ________.

A. has come up B. was coming up

C. had come up D. would come up

In order to find the missing child，villagers ________all they can over the past five hours.

A. did B. do

C. had done D. have been doing

—Thank God you're safe!

—I stepped back，just ________to avoid the racing car.

A. in time B. in case

C. in need D. in vain

It's surprising that your brother ________Russian so quickly—he hasn't lived there very long.

A. picked up B. looked up

C. put up D. made up

—Why do you choose to work in an international travel agency?

—Well，you know，English is my ________.So it is my best choice.

A. strength B. talent

C. ability D. skill

I'd prefer to ________my judgement until I find all the evidence.

A. show B. express

C. pass D. reserve

—How did you like Nick's performance last night?

—To be honest，his singing didn't ________to me much.

A. appeal B. belong

C. refer D. occur

The people who have ________the event offered special information about the event.

A. resisted B. conveyed

C. witnessed D. complained

The man has so much ________that he can do the work of five ordinary people.

A. energy B. power

C. force D. strength