题目内容

The subway is under _____ and next year it will be put in use.

A. production
B. construction
C. destination
D. permission

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He found it important _______ the situation all over the world.

A. study
B. to study
C. studies
D. to be studied

Remember that it makes a bad _________if you are late.

A. custom
B. habit
C. comment
D. impression

The local government has always placed a strong emphasis _____ educational and vocationaltraining.

A. with
B. for
C. on
D. to

大多数活塞发动机的活塞顶为球形。

A. 对
B. 错