题目内容
He can’t help __ housework, for he is busy __ for the examination.
| A.doing; preparing | B. to do; to prepare | C.doing; to prepare | D.to do; preparing |
D
解析
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题目内容
He can’t help __ housework, for he is busy __ for the examination.
| A.doing; preparing | B. to do; to prepare | C.doing; to prepare | D.to do; preparing |
D
解析