what do you think is the most useful invention in the world 这句话可不可以换成 what do you think the most useful invention is in the world 为什么呢?换成 what is the most useful invention in the world do you think?

问题描述:

what do you think is the most useful invention in the world
这句话可不可以换成 what do you think the most useful invention is in the world
为什么呢?
换成 what is the most useful invention in the world do you think?