Evdence has been found through years of studychildren’s early sleeping problem are likely to continue when they grow up.

I was____ he received an invitation from his friend to visit Chongqing ____ he felton top of the world.[ ]

We didn’t know you were in trouble at that time,otherwise we________ you a hand.[ ]

Let us suppose that we _____him about it, what would have happened?

This pair of jeans ________ them 300dollars.