题目内容

The law required that everyone ( ) his car checked at least once a month.

A. has
B. had
C. have
D. would have

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If ( ) successfully, the plan will completely change the traffic conditions in our city.

A. carrying out
B. carrried out
C. to carry out
D. carry out

We tried () to reach you last night,but your phone was always busy.

A. in doubt
B. in person
C. in hand
D. in vain

We () gas right in the middle of the main street and blocked traffic.

A. cooled down
B. ran out of
C. ended up
D. tore off

They cannot () upon to offer much support.

A. be relied
B. be sensitive
C. be keen on
D. be familiar

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