. Don’t leave your keys in the car. Someone might steal ________ .
| A．one | B．that | C．this | D．it |
The waste water, when _______，should be clean enough to meet standards.
| A．releasing | B．being released | C．released | D．to be released |
As for me, few excitements can beat ______of being admitted to my favorite university.
| A．that | B．those | C．one | D．ones |
--What a beautiful dress Jane is wearing！
--But it doesn't look good ____ her skin.
| A．on | B．in | C．against | D．alongside |
Under no circumstances _______the search far the missing plane.
| A．do we stop | B．will we stop | C．we stop | D．we will stop |
Tired of switching from one company to another, he finally found a____ job in the government.
| A．thorough | B．significant | C．frequent | D．permanent |