Modal verbs of probability

My classmate can play basketball very well.

• He must practice every day.

• He must be practice every day.

• He must be practicing every day.

My uncle is very strong. He can lift 100 kilos!

• He must be exercise a lot.

• He must exercise a lot.

• He must exercising a lot.

John and Steven are running to their next class.

• They might being late

• They can't be late

• They might be late

There’s someone studying at the library.

• It can’t be David. I think he’s at home.

• It must be David. I think he’s at home.

• It sholdn't be David. I think he’s at home.

Can you see that bright light in the sky? I am not certain what it is.

• It must be a spaceship.

• It can't be a spaceship.

• It might be a spaceship.

I just saw Mathew and he looks really nervous.

• He might be going to his driving test.

• He might go to his driving test.

• He can't go to his driving test.

Hey! Look out the window, everyone. It’s snowing!

• It must be snowing! It’s August!

• It can’t be snowing! It’s August!

• It should be snowing! It’s August!

Our TV remote control doesn’t work.

• We may be needing to buy some batteries.

• We may need to buy some batteries.

• We can't be needing to buy some batteries.

John _________ gone on holiday. I saw him this morning downtown.

• must have

• can't have

• should have

I _________ revised more for my exams. I think I'll fail!

• should have

• might have

• can't have