题目内容
The maths problem remained confusing to the boy although __________ over and over.
A.explaining B.being explained C.explained D.having explained
C
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短文改错:
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题目内容
The maths problem remained confusing to the boy although __________ over and over.
A.explaining B.being explained C.explained D.having explained
C
|
短文改错:
| |||||||||||||||||||||