there used to be a tall tree in front of our classroom,_____?改为反义_英语解答

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?

人气：496 ℃　时间：2019-09-05 08:55:27

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