The man is wearing sports clothes. He must______for exercise. A .running B.be running
The man is wearing sports clothes. He must______for exercise.
A. runningB.be runningC. runD.to run
人气：233 ℃ 时间：2020-04-03 23:49:13
解答
C.run must是情态动词,情态动词后用原形
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