单选题I didn’t know anything about the attributive clause, for I _____ my lesson.Ahad not studiedBdidn’t studyChave not studiedDdon’t study
单选题
I didn’t know anything about the attributive clause, for I _____ my lesson.
A
had not studied
B
didn’t study
C
have not studied
D
don’t study
参考解析
解析：
时态题。在for引导的原因状语从句中，从句动作发生在主句动作之前，主句是一般过去时，所以从句应为过去完成时，故本题应选A。
时态题。在for引导的原因状语从句中，从句动作发生在主句动作之前，主句是一般过去时，所以从句应为过去完成时，故本题应选A。
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