Helen ______ go on the trip with us, but she isn’t quite sure yet.
| A．shall | B．must | C．may | D．can |
__________ the crisis of economy getting more and more serious, the government is searching for ways to improve people’s life.
| A．As | B．For | C．With | D．On |
He is no longer in good condition, and his ability to work is limited. I _______ him to give up the job but failed.
| A．suggested | B．persuaded | C．tried to persuade | D．managed |
---Shall I keep an eye on your house when you are on holiday? ---________.
| A．It’s up to you | B．Of course you should |
| C．If you should like | D．I would appreciate that |
The new road is __________ of the old one.
| A．more than three times the length |
| B．three times more than the length |
| C．more than the length |
| D．more three times than the length |
Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
| A．being used | B．used | C．to be used | D．having been used |