Jenny (must / may / can't) have a problem. She's been crying all day.
must
David (must not / might not / can't) have broken his arm yesterday. I saw him playing tennis today!
can't
I don't know where Adam is. He (must / might / can't) be at the bank.
might
I don't want to go to the beach. I heard it (must / might / can't) rain later.
might
She (must not / might not / can't) be a vegetarian. I saw her eating a hamburger for lunch.
can't
I'm not sure if John is married. He (must not / might not / can't) be.
might not
Shirley (must / might / can't) have a driver's license. I saw her driving downtown.
must
I had my keys 5 minutes ago and now I can't find them. They (must / might / can't) be here somewhere.
must
I'm not sure why they don't come with us. They (must not / might not / can't ) have enough money.
might not
Luke (must / might / can't) be tired today because he couldn't sleep at all last night.
must
She (must not / might not / can't) want another candy. She has already eaten 50!
can't
Mark goes skiing every weekend. He (must / might / can't) like skiing.
must
Sally didn't stay home last night. Where do you think she went?
She may / might / could have gone...
Where do you think your teacher went on her last vacation?
She may / might / could have gone..
Lorrie bought something new and expensive yesterday. What do you think she bought?
She may/might/could have bought...
Ron couldn't have forgotten about the party because....
..he organized it!
