跟别人初次见面,应该说:A. How are you?B. Nice to meet you.C. How do you do?
We shouldn't make noise here. It means “________”. A. Keep off the grass B. Keep quiet C. Don't touch
The sign means you shouldn't ______ photos here. A. take B. talk C. taking
Ben,open the window please. ______ close it. A. Don't B. Aren't C. Not
It's time ________ some cakes. A. to B. for C. for have
The boys ________books in the classroom now. A. are looking B. are reading C. are seeing