China has been working very hard to stop the endangered animals ______ .
| A．dying out | B．dying away | C．dying down | D．dying hard |
If I can help________, I don’t like to working late into the night.
| A．so | B．that | C．it | D．them |
Only by _______ your attention _______ what you are learning can you learn it well.
| A．concentrate; on | B．pay; on | C．concentrating; on | D．paying; on |
—Do you mind if I smoke here?
— ___________.
| A．No, please don’t | B．I’d rather you didn’t |
| C．I don’t want you to | D．I’m afraid you don’t |
It’s not _________ good idea to drive for four hours without _______ break.
| A．a; a | B．the;a | C．the;the | D．a;the |
---How about putting some pictures into the report?
---________ A picture is worth a thousand words.
| A．I don’t think so. | B．Why not? | C．Thank you. | D．It doesn’t matter. |