题目内容
_____ scores of times , but he still couldn’t understand it .
A.Having explained | B.Having been explained |
C.Though it was explained | D.It was explained |
D
解析
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题目内容
_____ scores of times , but he still couldn’t understand it .
A.Having explained | B.Having been explained |
C.Though it was explained | D.It was explained |
D
解析