Most of us think ______ important to know how to get well along with others.
| A．it | B．不填 | C．that | D．this |
You didn’t take his advice. ____ his advice, you _____ such a mistake.
| A．Had you taken; wouldn’t have made | B．If you had taken; would make |
| C．Were you to take; shouldn’t have made | D．Have you taken; won’t have made |
In our childhood, we were often ____ by Grandma to pay attention to our table manners.
| A．demanded | B．reminded | C．allowed | D．hoped |
After he retired from office, Rogers _____ painting for a while, but soon lost interest.
| A．took up | B．saved up | C．kept up | D．drew up |
The telephone rang at midnight, but it stopped ______ I could answer it.
| A．when | B．that | C．before | D．since |
The radiation amount of a mobile phone for two half-hour periods per day is equal to ___ to an X-ray for ten seconds.
| A．expose | B．exposing | C．exposed | D．being exposed |