_it be necessary I would go.
A. should
B. is
C. that
D. this
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_she returned an hour earlier, she wouldn't have been caught.
A. had
B. have
C. has
D. that
A man is known by the companion he keeps.
A. 对
B. 错
Their parents are upstairs clearing the room.
A. 对
B. 错
He treat the matter_a joke.
A. as
B. to
C. on
D. in
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