It has been announced that candidates________remain in their seats until all the papers have been collected.
| A．can |
| B．will |
| C．may |
| D．shall |
To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.
| A．carried out | B．caught on | C．took up | D．made for |
One way to understand thousands of new words is to gain _____ good knowledge of basic word information.
| A．不填 | B．a | C．the | D．one |
It was announced that only when the fire was under control ____ to return to their homes.
| A．the residents would be permitted |
| B．had the residents been permitted |
| C．the residents had been permitted |
| D．would the residents be permitted |
The driver _____ for the accident had not been driving carefully.
| A．blamed | B．being blamed |
| C．to be blamed | D．blaming |
You should read the _________ in the car repair manual (手册) carefully before you start to work on it.
| A．instructions | B．descriptions |
| C．introductions | D．explanations |