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Modal Verbs of Deduction Practice

Now look at the following exercise and choose one modal of deduction for each space.

1. Look at that suntan she has. She MUST HAVE BEEN on vacation somewhere sunny!
2. You got every question wrong. You CAN'T HAVE UNDERSTOOD the lesson very well.
3. I just tried to ring Kathy but she MUST BE OUT out as there was no reply.
4. You CAN'T BE very worried about your exam tomorrow if you're watching TV.
5. I MUST HAVE BEEN crazy to buy that car. My wife's going to kill me!
6. John didn't say why he wasn't at work. He MIGHT BE ill.
7. You MUST BE exhausted after doing all that painting. Have a break.