题目内容
Is this the reason ______ at the meeting for his carelessness in his work?
A. why he explained B. he explained C. what he explained D. how he explained
B
考查定语从句的句法知识。原句可改为:This is the reason he explained at the meeting for his carelessness in his work。此处the reason是先行词,作explained的宾语。
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