These days some young people just ________ work hard because they have got used to the easy life provided by their parents.
| A．mustn’t | B．won’t |
| C．mightn’t | D．shouldn’t |
It’s a pity that Andrew didn’t want to go to the conference.________ willing to go，we could have paid all his expenses.
| A．Had he been | B．Being |
| C．Was he | D．He had been |
It is beyond my understanding that many adults ________ be so crazy about Harry Potter series.
| A．will | B．can |
| C．may | D．should |
—Look，I’ve bought some bread，including your favorite flavor.
—You ________ any because we still have plenty at home.
| A．should have bought |
| B．could have bought |
| C．needn’t have bought |
| D．mustn’t have bought |
Even students of average intelligence ________ become top students by improving their study habits.
| A．must | B．can |
| C．have to | D．ought to |