单项选择题

Some bosses dislike (to allow) people (to share) their responsibilities; they keep (all) important matters (tightly) in their own hands.

A．to allow
B．to share
C．all
D．tightly
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单项选择题
Having been served lunch, ______.
A．the problem was discussed by the committee
B．the committee discussed the problem
C．it was discussed by the committee the problem
D．a discussion of the problem was discussed
单项选择题
56（）

A．make up
B．makes up
C．makes for
D．make for
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