At proper horse races everyone has already studied the form of the horse __________.
| A．behind time |
| B．in progress |
| C．in advance |
| D．in time |
—I’ve taken someone else’s green sweater by mistake.
—It _________ Harry’s. He always wears green.
| A．has to be | B．will be | C．mustn’t be | D．could be |
You ______ be tired –you’ve only been working for an hour.
| A．must not | B．won’t | C．can’t | D．may not |
I often see lights in that empty house. Do you think I _______ report it to the police ?
| A．should | B．may | C．will | D．can |
— Excuse me, but I want to use your computer to type a report.
— You _______ have my computer if you don’t take care of it.
| A．shan’t | B．might not | C．needn’t | D．shouldn’t |
Children under 12 years of age in that country ______ be under adult supervision when in a public library.
| A．must | B．may | C．can | D．need |