Modals of possibility & deduction review

Write another sentence that makes sense after this one, using a modal: Ann answered the door with flour in her hair. _______________

Sarah just sneezed. She [could be / could been] sick.

We [must / might / could] not go on vacation this weekend. We haven't decided yet.

Write another sentence that makes sense after this one, using a modal. The kid woke up screaming. ______________

They may be [study / to study / studying] at a different school now.

It [can't have been / may have been] Paolo that ate all the chips. He hates salty food.

You [can't be/can't have been] a grandmother. You look too young!

Write a sentence to go before this one, using a modal: ________________ They look exactly the same.

Sid isn't answering his phone. He [might leave/might have left] it at home.

It ______ be more than five degrees in here. It feels like a fridge!

He didn't come to the meeting. He [might have forgotten/might forget] about it.

He ______ (forget) about the party! I reminded him about it many times!

You ________ (practice) a lot before you gave your speech. It was really good.

I never told him that. He [must have misunderstood/can't have misunderstood] me.

Tarek isn't in class today. [May / Could] he be sick?

When Lizzie got home yesterday, there were flowers on the table. Her wife _______ (buy) them because no on else has a key.

[Could / May] that be a UFO in the sky??!