13. I'm sure Carl ate all the cookies. = "Carl ______ all the cookies."
must have eaten
must eating
can’t eat
might eats
14. It's possible Anima didn't tell the truth. = "Anima ______ the truth."
might not have told
may has tell
must told
can’t tell
5. They’re laughing a lot. They ______ be having fun.
must
can’t
have
may not
18. I'm sure they aren't talking about us. = "They ______ about us."
might talks
can’t be talking
may talking
must be talked
6. It’s very cloudy. It ______ rain later.
can’t
might
should
couldn't
10. That animal ______ be a dog. It looks more like a bear.
must
may
can’t
should
12. I'm sure you know a lot of people here. = "You ______ a lot of people here."
might knowing
must know
can’t know
may knowing
15. I'm sure you're joking! = "You ______!"
must jokes
may joking
can’t be joke
must be joking
4. The lights are on. Someone ______ be at home.
can’t
may not
goes to
must
1. She looks tired. She ______ to bed late last night.
may goes
might go
must have gone
can’t go
9. The cake smells good. It ______ be ready soon.
may not
don’t
can’t
must
19. Perhaps Sam didn't see you. = "Sam ______ you."
can’t seen
may sees
must not saw
might not have seen
20. I'm sure they're wondering where we are. = "They ______ where we are."
may wondered
must be wondering
can’t wonder
might wonders
2. I think he ______ be the new student. I’ve never seen him before.
might
can’t
couldn't
must
3. That ______ be Anna. She’s on her vacation in Japan right now!
can’t
must
may
might
17. I'm sure she hasn't cleaned the bathroom. = "She ______ the bathroom."
couldn't have cleaned
may have cleaned
might cleaning
can't have cleaned
8. I don’t see her bike outside. She ______ be here.
does
can’t
might
must
7. He got 100% on the test. He ______ be very smart.
must
isn’t
can’t
might
16. Maybe they're planning a surprise party! = "They ______ a surprise party!"
must planning
can’t be plan
might be planning
may planned
11. I'm sure that noise isn't a plane. = "That noise ______ a plane."
may be
might be
can’t be
must be