. The production of television commercials must be professional ________ they aim at promoting good service, or public education.
| A．when | B．no matter | C．if | D．whether |
The UN is trying to ______ the world ________ hunger.
| A．get rid of; by | B．rid; of | C．be rid of ;by | D．get rid; of |
Only after I read the text over again _____ its main idea.
| A．that I knew | B．did I know | C．I could know | D．I did know |
To the surprise of many people, in ten years the city’s population _______ by 12%.
| A．gained | B．expanded | C．developed | D．spread |
The government tried it’s best to ______ the people’s needs, but the people were still not _____.In fact, what the government did was not ________.
A. satisfy; satisfied; satisfying B. satisfy; satisfying; satisfied
C satisfied; satisfied; satisfying D. satisfying; satisfied; satisfied
At times the balance in nature is ______，resulting in a number of possibly unforeseen effects.
| A．troubled | B．confused | C．disturbed | D．puzzled |