--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 |
-- 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．I agree | B．I think so |
| C．I disagree | D．I have no idea. |