—Linda, together with her parents, ______up the mess in the park at the moment.
—It’s meaningful to be a volunteer. Let’s join them.
A. is cleaning B. are cleaning C. has cleaned D. have cleaned
—Do you want to see the painting exhibition at the weekend?
—I won’t see it unless I __________.
A. will be invited B. am invited
C. invite D. will invite
—It’s ______ of you to bring me some fruit.
—My pleasure. Please make yourself at home, sir.
A. generous B. clever C. thoughtful D. polite
—Miss Green, could you tell me how to improve my pronunciation?
—Sure. The most important thing is that you should _________.
A. do more exercise B. use the dictionary correctly
C. listen and speak more D. work out some outlines first
—_________ did you leave the classroom?
—___________ I saw my daughter sit down and read her book.
A. How long; After B. When; Until
C. How long; Until D. When; After
—Excuse me, will the plane for Beijing __________within an hour?
—I’m not sure. You can go to the Information Desk for help.
A. get off B. take off C. turn off D. show off
