Large quantities of solid fuel________ consumed every day and too much carbon dioxide is sent into the air，which in turn________ the going up of temperature.
| A．is；results in | B．are；results in |
| C．is；leads to | D．are；results from |
I think you should complain—_________ , of course, you are happy with the way things are.
| A．if | B．until | C．unless | D．once |
Life for us is _________exercise in making different choices and can never come
to_________end until the end of life itself.
| A．/; / | B．/; an | C．an;/ | D．an;an |
Expensive restaurants are not_________ the best.
| A．frequently | B．directly |
| C．immediately | D．necessarily |
The car was damaged_________repair in the accident.
| A．in | B．under | C．beyond | D．on |
I can’t find my socks. Where ________ I have dropped them?
| A．must | B．can | C．would | D．should |