题目内容

Do you know __________ the pie out of the oven?

A. to take
B. have taken
C. when to take
D. being taken

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The students expected there _________ more review classes before the final exams.

A. is
B. to be
C. being
D. have been

Madame Curie is believed _________ radium (镭).

A. discovering
B. having discovered
C. to have discovered
D. to discover

She was made ________ at once.

A. leaving
B. to leave
C. left
D. leave

Revolution means ________ the productive forces.

A. to liberate
B. to be liberating
C. liberating
D. liberate

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