题目内容
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It took him twenty minutes to solve the problem.(改为同义句)
He ________ twenty minutes ________ the problem.
答案：
解析：
解析：
|
spent,solving |
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题目内容
句型转换
It took him twenty minutes to solve the problem.(改为同义句)
He ________ twenty minutes ________ the problem.
|
spent,solving |