_______ he was sleeping , they stole his clothes

I don’t think the color of the curtains ______ the color of your room perfectly.[ ]

He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system _________.

een trying to phone Charles all evening, but there must be something wrong with the network; I can’t seem to ______.

This is the first time that I _____ thesummer palace．