题目内容
1. Mike said he was thinking about the math problem at that time.
A. which to do B. what to do
C. how to do D. why to do
1.C
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习题精选系列答案题目内容
1. Mike said he was thinking about the math problem at that time.
A. which to do B. what to do
C. how to do D. why to do
习题精选系列答案