问题补充：
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 yourself3.we should finish the work today 4.you should repair your bike
答案：
The kids should be taught to swim
The room need be cleaned by yourself.
The work should be finished by us today.
You bike should be repaired by you first.
I don think aliens can be found in space.
Coul======以下答案可供参考======
供参考答案1:
The kids should be taught how to swim .
Your bedroom must be cleaned by yourself.
The work should be finished today .
your bike should be repaired first.
i don`t think the aliens can be found in space.
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
