请问这道英语题目为什么会选B呢?这不是非谓语动词吗?为什么会用原形?
Theparentswatchedtheirchildren________upthehilland________downonhill-topforarest.A.cl...
The parents watched their children ________ up the hill and ________ down on hill-top for a rest.
A.climbed; sat
B.climb; sit
C.climb; sitting
D.climbing; sitting 展开
A.climbed; sat
B.climb; sit
C.climb; sitting
D.climbing; sitting 展开
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