Modals of probability

Keiko always does really well on exams. She ________ study a lot.

Who's that at the door? It ________ be Susie - she'll still be at work now.

This _____ be John's house. This house has a red door and it's number 24, just like he said.

Where is my purse? I saw it earlier, so it ____ be in this room.

Hey! Look out the window, everyone! It's snowing!

• It can't be snowing! It's August!

• It can't snowing! It's August!

My classmate can play basketball very well.

• He must be practice every day

• He must practice every day

Oh, no! My car won't start! What's wrong with it?

• It must be out of gas

• It might be out of gas

• It can't be out of gas

Can you see that bright light in the sky?

• It could be a spaceship

• It can't be a spaceship

• It must be a spaceship

John and Steven are running to their next class

• They might be late!

• They must be late!

• They could be late!

My classmate has just raised her hand

• She must be know the answer

• She can't know the answer

• She must know the answer