—If there are _________cars, there will be _________air pollution.
—Yes. And the air will be cleaner.
| A．less; less | B．fewer; fewer | C．less; fewer | D．fewer; less |
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. |
Which of the following means “can be recycled”?
A B C D
-- Hello, this is Jack. May I speak to Tom?
-- Sorry, he isn’t in at the moment. If he _______ back, I’ll ask him to call you back.
| A．come | B．comes |
| C．have come | D．came |