题目内容

Are they reading in the living room or _______ in the kitchen?

A. cook
B. cooking
C. are cooking

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---What're the women doing? ---They ______ the dishes.

A. wash
B. is washing
C. are washing

____ not _____ along the wall.

A. Do, run
B. Are, running
C. Is, running

---______ the girl _____ under the tree? ---Yes, she is.

Are, sitting
B. Is, sitting
C. Does, sit

Must I _____ across the river ?

A. be swimming
B. swimming
C. swim

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