Twofifths of the highway________so far.
| A．has been completed | B．was completed |
| C．have been completed | D．has completed |
What do you mean, there are only ten tickets？There________be twelve.
| A．should | B．would |
| C．will | D．shall |
—________ I take the book out?
—I'm afraid not.
| A．Will | B．May |
| C．Must | D．Need |
Doctors say that exercise is important for health, but it ________ be regular exercise.
| A．can | B．will |
| C．must | D．may |
One of our rules is that every student ________ wear school uniform while at school.
| A．might | B．could |
| C．shall | D．will |
The new law states that people ________ drive after drinking alcohol.
| A．wouldn't | B．needn't |
| C．won't | D．mustn't |