There used to be a lot of trees.变为否定句

学习 时间:2026-05-29 23:15:52 阅读:1499
There used to be a lot of trees.变为否定句

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高兴的泥猴桃

美满的太阳

2026-05-29 23:15:52

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!