摘要：906] My brother while he his bike and hurt himself. [译文] 我哥骑自行车的时候摔倒了.受了伤. A. fell; was riding B. fell; were riding C. had fallen; rode D. had fallen; was riding [答案及简析] A. 时态问题.while引导的从句一般是进行时态.

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