题目内容
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Though the teacher had tried to make the problem easy__________, still Lily and her partner were at a loss.
A.understood | B.understanding | C.to understand | D.to be understood |
C
解析
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题目内容
.
Though the teacher had tried to make the problem easy__________, still Lily and her partner were at a loss.
A.understood | B.understanding | C.to understand | D.to be understood |
C
解析