题目内容
The professor explained this theory so clearly that this phenomenon was easy enough ________.
A. for us to work out B. working out
C. for working out D. to working out
【答案】
A
【解析】 略
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题目内容
The professor explained this theory so clearly that this phenomenon was easy enough ________.
A. for us to work out B. working out
C. for working out D. to working out
A
【解析】 略