—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
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
—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
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
—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
—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
