We look forward to the day when the motorcar has been replaced by some less dangerous ______of transport.
| A．means | B．methods | C．manners | D．ways |
As a result, these endangered animals may even __________.
| A．die away | B．die down | C．die out | D．die off |
__________ time goes on, our country becomes more and more powerful.
| A．With | B．Since | C．While | D．As |
The newly discovered star was named __________ a Chinese astronomer __________ honor of his contributions to astronomy.
| A．for; in | B．after; for | C．as; in | D．after; in |
The government has agreed to pay the firms extra sums to __________ for their financial losses.
| A．make up | B．bring up | C．fill up | D．look up |
You'd better not __________ the radio, or you will not be able to put it together again.
| A．take apart | B．take away | C．take out | D．take in |