单选题请问选B还是选C?Atthebeginningallthestudentskepttogetherbutbytheendofthedaythosewhowerelessfitbehind.A.havefallenB.fellC.hadfallenD.werefalling

Question

单选题 请问选B还是选C?
At the beginning all the students kept together but by the end of the day those who were less fit____ behind.
A.have fallen B.fell C.had fallen D.were falling

Answer 1

选B
因为句子是说发生在过去的动作,所以去掉A
没有正在干什么的意思,所以去掉D
had done表示在过去的某个时间之前,本题中先发生的动作
用kept,过去式,后发生的动作肯定不能用had fallen.
题意：刚开始的时候学生们都在一起,到了那天快过完的时候,那些不能适应的学生就拉到了后面.