题目内容

She ____ that she had locked the door.

A. made sure
B. made sure to
C. made sure of
D. made sure at

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Be careful! There are some____glass on the floor.

A. broke
B. breaking
C. broken
D. break

The secretary will contact you _____.

A. for three days
B. in three days
C. about three days
D. at three days

Would you show me____ use this machine?

A. how to
B. how I
C. whatto
D. what I

Have you got ____ letters I sent you?

A. the
B. /
C. a
D. an