单项选择题

The mother didn't know（）to blame for the broken glass as it happened while she was out.

A. who
B. when
C. how
D. what

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A common（）to jokes is to laugh.

A. response
B. reaction
C. action
D. respond

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He has a（）habit of biting his lips when he is puzzled.

A. peculiar
B. special
C. specific
D. particular

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Go through the gate and you'll find the entrance（）Bear Country on the other side.

A. to
B. of
C. in
D. on

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Up（）into the air.

A. went the arrow
B. the arrow went
C. did the arrow go
D. does the arrow go

单项选择题

The mother didn't know（）to blame for the broken glass as it happened while she was out.

A. who
B. when
C. how
D. what

单项选择题

I've heard him（）many times.

A. criticizing
B. criticized
C. criticizes
D. to criticize

单项选择题

Young people sometimes complain of not being able to（）with their parents.

A. commit
B. communicate
C. commission
D. command

单项选择题

I'm afraid that your request for promotion was（）.

A. turned in
B. turned up
C. turned down
D. turned over

单项选择题

It is necessary that he（）back without delay.

A. comes
B. came
C. come
D. would come

单项选择题

I（）Mr. Green last week and had a long talk with him.

A. called on
B. called forth
C. called after
D. called off