把下列句子改成被动语态 这是富有情态动词的被动 明天就用 .急

题目

把下列句子改成被动语态 这是富有情态动词的被动 明天就用 .急
把下列句子改成被动语态 这是富有情态动词的被动
1.they should teach the kids how to swim
2.you must clean your bedroom by yourself
3.we should finish the work today
4.you should repair your bike first
5.i don`t think we can find aliens in space

答案

The kids should be taught to swimThe room need be cleaned by yourself.The work should be finished by us today.You bike should be repaired by you first.I don't think aliens can be found in space.Coul