单项选择题As there was a power failure in the hospital, the doctor had to ()operation.

A.call for
B.call off
C.call on
D.cal lout


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4.单项选择题He said that he was ()aware of the difficulty of being a father.

A.highly
B.fully
C.soundly
D.firmly

5.单项选择题Problems may ()

A.rise
B.jump
C.arise
D.lift

7.单项选择题Having a good command of English is()an easy thing.

A.by all means
B.by any means
C.by every means
D.by no means

8.单项选择题()your help, I could not have finished my work so early.

A.with
B.by
C.for
D.without

10.单项选择题Not being able to speak English,they felt rather()in the USA.

A.strange
B.puzzled
C.alone
D.lonely