题目内容

Our staff has already _______ the floor.

A. sweep
B. swept

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The entrance of Line 7 at Sanwayao station is closed _______ heavy rain.

A. because of
B. because

_______ your steps. The floor is so wet. please walk on the non-slip mat.

A. Watch
B. Look at

The ticket gate is ______ construction. Sorry for the inconvenience.

A. under
B. in

You can Line 2 to Chengdu East Railway Staion, and then _ Line 7 to Taipingyuan..

A. get, take
B. take, transfer