问题: 根据要求改写句子
1.Yesterday our teacher asked us to clean the classroom(改为被动语态）
Yesterday ______ ________asked to clean the classroom
2.David was so careless that he didn't find the mistakes in his test paper.(保持原句意思）
David was _____ ______to find the mistakes in his paper.
3.Mr Brown stopped drinking two months ago(保持原句意思）
Mr Brown ______ ______drinking two months ago
4.Are there any museum in the city? Could you tell me?(改为宾语从句）
Could you tell me _______there_______any museum in the city?
解答:
1 we are
2 too careless
3 gave up
4 if, are
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