单项选择题

Not until darkness fell ____ he hadn’t done half of his work.
that he realized
B. that he didn’t realize
C. did he realize
D. didn’t he realize

A.

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My brother used ____ in the same office with John. They are very good friends.
to work
B. working
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由于下属对管理者的尊重而拥有的权力被称为：

A.法定权力
B．参照权力
C．强制权力
D．奖赏权力