AG1 U5 Present Certainty

Do you remember my birthday party last year? You _____ remember! It was the same day as your graduation.

• can't

• could

• must

Come and sit down. You _____ be tired after the journey.

• might

• can´t

• must

Whose is this coat? It ____ be Paul's. It's way too small for him

• can't

• must

• could

The exam results will be out soon. It _____ be this week or possible next week.

• must

• might

• can't

She always gets such good grades at school. She ____ work very hard.

• must

• could

• can't

The doctor said my headaches ____ be because of the hot weather but they're going to do some tests to be sure.

• must

• could

• can't

How old is Karen? - I don't know. She ____ be 35.

• must

• might

• can't

Ghost ____ be real. No one knows for sure.

• must

• may

• can't

Justin ___ be home. He traveled yesterday to Colombia.

• must

• may

• can't

Nazca Lines _____ be a type of calendar. It's one possible explanation.

• must

• could

• can't