题目内容

__________you free now? I have some questions to ask you.

A. Will
B. Do
C. Are
D. Would

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How much time__________ we have to finish the test?

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

Could you tell me if there_________ plenty of rain in the east of China?

A. has
B. have
C. is
D. are

John_______come to see us tonight, but he isn’t very sure yet.

A. may
B. can
C. has to
D. must

Even the top student in our class can’t work out this problem, so it________ be very difficult.

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

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