1. Draw a line to match the sentences that have the same mea...

1. Draw a line to match the sentences that have the same meaning.
2. I'm sure that's Katie.
3. I'm sure that isn't Katie.
4. It's possible that it's Katie. a. That must have been Katie. b. That girl must be Katie.
5. Maybe that isn't Katie. c. It might not be Katie.
6. I'm certain that wasn't Katie. o d. That girl can't be Katie.
7. Perhaps that was Katie. e. It may be Katie.
8. It was definitely Katie. f. It can't have been Katie. g. It could have been Katie. II. Write a modal verb to fill the gaps. (MIGHT, MAY, COULD, MUST, CAN'T)
9. She's won prizes for her research. She $\qquad$ be really intelligent.
10. I'd take an umbrella if I were you. It looks like it $\qquad$ rain.
11. It $\qquad$ be him. He's on holiday until next week.
12. Hey guess what?! । $\qquad$ be getting a car for my birthday! It's not completely definite yet though.
13. I can't believe you've been waiting all this time! You $\qquad$ be really bored.
14. His car's not here. He $\qquad$ have gone out.
15. Look how much sugar and salt it's got in it! it $\qquad$ be good for you.
16. Have you looked next to your computer? I think you $\qquad$ have left your keys there. III. Underline the mistake in each sentence
17. It mays be him. He's about that height.
18. You could to be right. Let's check on the internet.
19. It's six o'clock. She must have leaved work by now.
20. That can't be them. They was travelling this weekend.
21. Joe can't be playing football at the moment. He breaked his foot.
22. That might be mom called from Bali.
23. This writing is terrible. That can be an ' $e$ ', but I'm not sure.
24. I don't believe it! You can't had failed your exam!