---Did they have a good time at the party?---Judging by their smiles, they _________ have enjoyed themselves.
They must have been here the day before yesterday,____?
She________the film. She knows nothing about it.
—— Nacy_________ the letter from her mother. —— No, she can’t have. The postman hasn’t come yet.
I don’t think he_______ a new bike.
Tom_______show his exam results to his parents.