Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
| A．while | B．as | C．if | D．since |
The smelly water has been found_______ and no longer usable until the chemicals and wastes are removed from it.
| A．to be polluted | B．having polluted |
| C．polluting | D．polluted |
---Oh, Tom, what did you do this summer vacation?
---Guess what? I had ______great fun in _______show performance “ Voice of China” .
| A．a; the | B．the; the |
| C．/; a | D．/; the |
—Can I really get a car as a reward if I win the race?
—Absolutely. _______.
| A．It all depends. | B．I mean it. |
| C．I’m sorry. | D．Not really. |
--- Mr. Anderson is popular with his students, for he is kind, strict and knowledgeable.
--- No wonder he has such a good_________.
| A．reputation | B．tradition |
| C．preference | D．presentation |
--- I hear that Jason is planning to buy a new car.
--- I know. By next month, he ________ enough for a used one
| A．has saved | B．saves |
| C．will be saving | D．will have saved |