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My brother _____ while he _____ his bike and hurt himself
A.fell was riding B.fell were riding C.was falling rode D.was falling riding 选哪个?为什么?
人气:103 ℃ 时间:2020-02-03 01:09:14
解答
A
while 后的动词用进行时,排除 C D ,主语是HE 再排除B
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