题目内容
I studied English very hard but I really don't know _____in the English exam.
A. why I got a low mark B. why did I get a low mark
C. why I get a low mark D. why do I get a low mark
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题目内容
I studied English very hard but I really don't know _____in the English exam.
A. why I got a low mark B. why did I get a low mark
C. why I get a low mark D. why do I get a low mark