She ____ on her way to school. I just phoned her home and got no answer.
| A．should be | B．might have been | C．must be | D．could have been |
—Well, I forgot to bring my dictionary here yesterday.—Actually you _____ it here. You were not allowed to use it.
| A．needn’t bring | B．needn’t have brought |
| C．didn’t need to bring | D．don’t have to bring |
—Many people in England love to give advice on weather reporting.—Yes, but I think the weather office’s computers _____ be more accurate.
| A．can | B．must | C．ought to | D．might |
The whole building _____ burned down, but the heavy rain _____.
| A．might have; would help |
B．could have been; helped |
C．must have; helped |
| D．should have been; was helping |
Messages ______ be changed from sound into electricity before they ______ be sent by radio.
| A．must; will | B．have to; can | C．can; must | D．need; may |
He _____ his parents that he has failed in the exam.
| A．dares not tell | B．dares not telling | C．dare not tell | D．dares not to tell |