--What if you don't finish your work on time?
-- Mrs. Brown will be very angry.
A. happens B. is happened C. happened D. will happen
--It is cold outside. You'd better wear warm clothes to the cold.
--Ok, thanks.
A. keep out B. keep down C. turn down D. let down
Things made by hand are usually more expensive than _ produced in factories.
A. these B. this C. that D. those
一 Have you finished your homework yet?
-- No, not yet. I think it'll take me half an hour.
A. another B. other C. others . D. the other '
--Do you think students should be allowed to do their homework with music on?
-- . If so, they can't concentrate on the study.
A. 1 agree B. 1 think so C. I disagree D. I have no idea.
Which of the following means “can be recycled"?