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--- You mean it’s ___________ for us to take a taxi?

A. necessary B. important C. possible D. difficult

—Sure, but you ________ come back home before 9 o’clock.

A. can B. must C. may D. might

A. do some wash B. do some washing

C. does some wash D. does some washing

—No.They ______ taking a walk in the park.

A. do B. are C. does D. is

A. put it up B. put up it

C. put it out D. put out it

A. waiting B. wait C. to wait D. waitting

A. that

B. this

C. one

D. it

A. How old B. How C. Where D. What

A. what to do B. to do what C. whether to do D. to do whether

—No, I won’t.

A. to talk B. to speak

C. speaking D. to say