I must buy a cake today.
My brother cannot speak Finnish.
My sister can speak Polish.
May I see your photo?
Can you show me your photo?
He can’t be forty: he looks much younger.
He can’t have forgotten to come. He must have been very busy.
We may go to the country if the weather is fine.
If my sister does not buy me any coffee, I shall have to go to the shop myself.
I cannot find my watch. — You may have left it at work. — No, I can’t have left it at work: I never take it off my wrist.
Will you be able to speak to him tomorrow?
I must have lost my way. Can you tell me how to get to the Hermitage?
I had to read a lot of books when I was getting ready for my report.
I could not remember the last lines of the sonnet, and I had to ring up my friend.
You can’t watch TV until you have done your homework.
We must keep in touch.
Don’t worry, I’ll be able to come.