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外语
I didn’t know anything about the attributive clause, for I _____ my lesson.
I didn’t know anything about the attributive clause, for I _____ my lesson.
admin
2017-02-18
27
问题
I didn’t know anything about the attributive clause, for I _____ my lesson.
选项
A、had not studied
B、didn’t study
C、have not studied
D、don’t study
答案
A
解析
考查时态。for引导原因状语从句,主句是一般过去时,从句动作发生在主句动作之前,故用过去完成时。答案为A。
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专业英语四级
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