改为被动语态：1.He has worked out the problem.2.We have planted more than 100 young trees.3.We must keep our classroom clean and tidy 4.My mother bought me a new sweater last Friday.
人气：375 ℃ 时间：2020-02-03 22:14:05
解答
1.The problem has been worked out by him.2.More than 100 young trees have been planted by us 3.Our classroom must be kept clean and tidy 4.I was bought a new sweater by my mother last Friday.或是 A ne...
推荐
猜你喜欢
