题目内容
句型转换
He used to take a walk along the street．(改为否定句)
He ________ ________ to take a walk along the street．
答案：didn't,use
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句型转换
He used to take a walk along the street．(改为否定句)
He ________ ________ to take a walk along the street．
阅读快车系列答案