The preschool children who watch TV programs with violent scenes are more likely to have sleep problems than those who watched programs for the age.

There are lots of islands the coast of Canada, and Shanghai is a famous harbor the east coast

th Olympic Games, _______ between July 27 andAugust 12 in 2012, will take place in London.

Has Li Lei finished his work today?— I have no idea, but he ______ it when I saw him this morning

Hi, Jack. Nice to see you here. I _____ you would come to the party.