Past Modals of Certainty

She __________ been in her office. She is almost always there in the afternoons. (fairly sure)

• may have

• might havre

• must have

They __________ heard about your positive qualities. You´re not only stubborn. (not sure)

• may have

• might have

• could have

He __________ left early. He isn´t at home now. (very sure)

• may have

• might have

• must have

My sister __________ missed the bus. She hasn´t arrived yet. (not sure)

• might have

• may have

• must have

I __________ phoned you if I had known about your accident. (fairly sure)

• must have

• may have

• could have

I think they __________ lost somewhere. They would be here now! (very sure)

• must have

• could have

• might have

The dog __________ lost his toy. He doesn´t find it anywhere. (not sure)

• could have

• must have

• might have

The teacher __________ felt ill. She is never absent at school. (fairly sure)

• may have

• could have

• must have

I __________ bought some bread but I didn´t know we needed it for lunch. (not sure)

• may have

• must have

• could have

They __________ won the soccer game but John broke his leg while he was playing. (very sure)

• must have

• might have

• may have