The ship is _____ the bridge.
A. going under
B. going , beneath
C. go on
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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
These cooks are _______ in the kichen.
A. cook a meal
B. cooking a meal
C. cook