题目内容

Are they ____ the wall?

A. jump
B. jump off
C. jumping off

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The ship is _____ the bridge.

A. going under
B. going , beneath
C. go on

You must ______ these clothes.(脱衣服)

A. take on
B. take off
C. take down

Sally is _____ some pictures on the wall.

A. look
B. look at
C. looking at

The student isn't ______.

A. doing his homework
B. do his homework
C. does his homework

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