Speculation about the past, present, and future

It ______ be Diana’s birthday today. I went to her birthday party last month!

• can’t

• must

• might

Susie ______ win the race if she gives it a try. She has as much chance as everybody else.

• may

• must

• can't

Everybody is wearing T-shirts and sunglasses in the picture. It ______ be very warm.

• must

• might

• won't

Adam looked a bit pale and tired yesterday. He ______ have been sick.

• could

• can

• can't

We should have entered the competition. You never know – we ______ have won.

• might

• must

• won't

I haven’t decided whether to study math at college. In fact, I ______ go to college at all.

• might not

• could not

• will

We ______ be able to go to the beach tomorrow because it’s going to rain.

• won’t

• can’t

• will

Jimmy ______ be sleeping now. He’s too excited!

• won’t

• mustn’t

• will

Daisy ______ have known we were coming. I called her earlier to tell her what time we would arrive.

• will

• can't

• may

The baby ______ be sleeping, so don’t make a noise, just in case.

• can't

• might

• won't