单项选择题

As there was a power cut in the hospital, the surgeon had to（）the operation.

A. call for
B. call on
C. call off
D. call up

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单项选择题
The notebook（）cover is blue belongs to me.

A. what
B. which
C. whom
D. whose
单项选择题
How foolish it is（）her to believe（）such a man's honesty!

A. of... in
B. for.., in
C. for.., on
D. of... on
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