--- What        it be? --- It         be a man, for it is not moving. It      be a dustbin, I think.

I have been looking for Michael for a whole day. Where ______ he have gone?

If I ________ plan to do anything I wanted to. I’d like to go to Tibet and travel through as much of it as possible.  

—I don’t suppose they could have finished their experiment,      they?—       , they are still doing it in the lab.

He________ the person referred to be put in prison.