The light in the office is off. The teacher _______ be there now.(提示：第一句译为“办公室的灯灭了”。）
A: may
B: can't
C: mustn't
A: may
B: can't
C: mustn't
举一反三
- “<br/>_____ he be watching TV now?” Yes, he _____ be watching TV<br/>now.” <br/>No, he _____ be watching TV now.” A: Must; can; mustn’t B: Can; must; can’t C: Must;<br/>must; can’t D: Can; can; mustn’t
- --May I use your computer ? ---Sorry,you _____.It doesn’t work now. A: mustn’t B: may C: can’t D: needn’t
- –Don’t forget to turn off the light when you leave. --- I _________. A: mustn’t B: won’t C: don’t D: can’t
- You must pay the money, but you （ ）do so now.。 A: mustn’t B: can’t C: may not D: needn’t
- A：Must I turn off the light when I leave? B:No, _____. A: you mustn't B: you can't C: you needn't