29.If we were parrots or chimpanzees, these methods __________ be successful.
A: can
B: must
C: can’t
D: might
A: can
B: must
C: can’t
D: might
举一反三
- “May I put the chair near the fire ?” “Yes, you _______.” A: can’t B: must C: can D: might
- A: We went to Italy for a holiday last year.B: That __________ nice. A: can be B: must be C: must have been D: can’t have been
- 27.A computer__________think for itself, it must be told what to do. A: can't B: couldn't C: may not D: might not
- karen loves her cats. She ___ killed them. A: must have B: might not C: might have D: can't have
- “<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