There used to be a lot of trees.变为否定句

学习 时间:2026-04-08 23:40:08 阅读:5226
There used to be a lot of trees.变为否定句

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玩命的河马

长情的音响

2026-04-08 23:40:08

There usedn't to be a lot of trees。或There didn't use to be a lot of trees。加油!不明白再问!