You can see as many as 15,000 monarch butterflies ( )on one branch

问题描述:

You can see as many as 15,000 monarch butterflies ( )on one branch
A.sitting B.sit C.sits 选哪一项

选A.see sth./ab.doing
B是错的,原因同上
C也是错的,而且错的很离谱,s只有当人称是单数的时候才能加
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