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