Special attention should be paid ________our earth from________.
| A．to prevent；being polluted |
| B．to prevent；polluting |
| C．to preventing；being polluted |
| D．to preventing；polluted |
The two presidents agree with each other on the whole, but much remains______at the following meeting.
| A．discussing | B．discussed | C．to discuss | D．to be discussed |
The more one is ______the English-speaking environment, the better he or she will learn the language.
| A．exposed to | B．filled in | C．caught on | D．kept up |
As______unemployment is very high nowadays, it’s very difficult for people to find______work.
| A．the; 不填 | B．the ; a | C．不填；不填 | D．an; the |
Can you think of some cases______drivers obviously knew the traffic rules but didn’t obey them?
| A．why | B．where | C．as | D．which |
It’s so surprising to hear from my school teacher again. ______, we last met more than twenty years ago.
| A．That’s to say | B．What’s more | C．Believe it or not | D．In other words |