Не must be very clever.
He must have recognized you.
He was to go to the headmaster and explain his behaviour.
You will have to speak to her.
They had to walk for a long time.
He won’t have to rewrite the essay.
He must be painting her portrait.
They must have already gone.
He was to make a wonderful discovery.
I am to do a lot of work today.
I had to go there myself.
You will have to wait a little.
When is he to come?
The train was to arrive in a few minutes.
Unfortunately, they weren’t able to go to the party. Their mother had to wait for the plumber. Their father had to work late at his office. Their aunt had to take care of the little ones (the small children). Their uncle had to fix his car. Bad luck!