thereusedtobeatalltreeinfrontofourclassroom,_____?改为反义疑问句是wasn'tthere还是didn'tthere?
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题目内容：
there used to be a tall tree in front of our classroom,_____?改为反义疑问句
是wasn't there 还是didn't there?
优质解答
usedn't there
这个问题一直有歧义,网上搜搜,上面写的很详细
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