Rewrite the sentences using must/might/may/
could or can’t. Do not change the meaning of
the original sentences.
0. I’m sure she’s taller than Mark.
_She must be taller than Mark._
1. I think the concert is on Friday, but I’m not
sure.
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2. I’m sure they won’t win – the other team is
better.
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3. I think she is in the same dance group as my
sister, but I’m not sure.
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4. I know it isn’t our new teacher. She has got
long hair.
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5. I’m sure you’re very disappointed with your
exam score.
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