Susan refuses to marry Jack now. She ________ mind.
A: must change
B: can’t have changed
C: must have changed
D: might have changed
A: must change
B: can’t have changed
C: must have changed
D: might have changed
举一反三
- Water ____ into ice. A: will changed B: must be changed C: should change D: can be changed
- When I first met Bob I didn’t like him, but I ______ my mind. A: have changed B: change C: had changed D: would change
- karen loves her cats. She ___ killed them. A: must have B: might not C: might have D: can't have
- Our city _________a lot over the past few years. A: changed B: has changed C: have changed D: change
- Where ________ Mary have put the empty bottles? -She ________ them away. They must be somewhere. A: can; can't have thrown B: must; needn't C: must; must have thrown D: can; mustn't have thrown