问题标题：
WhenIwaswalkingacrossthesquare,Isawaplane______overmyhead.A)fliesB)flyC)flewWhenIwaswalkingacrossthesquare,Isawaplane______overmyhead.A)fliesB)flyC)flewD)flown
问题描述：
WhenIwaswalkingacrossthesquare,Isawaplane______overmyhead.A)fliesB)flyC)flew
WhenIwaswalkingacrossthesquare,Isawaplane______overmyhead.A)fliesB)flyC)flewD)flown
李粉伊回答：
选B
这个句子的谓语是saw
一般来说有这样的结构seesomethingdo/doingsomething.
see后面跟动词原形或ing形式,所以排除掉ACDA选项.
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