BE (ABOUT) TO DO STH

The headmaster should open the new playground tomorrow.

The headmaster [..........] the new playground tomorrow.

The pupils should wait for the teacher in the classroom.

The pupils [..........] for the teacher in the classroom.

We think that the government will deal with the issue of the unemployment next month.

The government [..........] with the issue of the unemployment next month.

The mayor should have gone to Berlin last Monday but he was ill and didn’t manage to.

The mayor [..........] to Berlin but he was ill and didn't manage to.

When will the local authorities introduce the new regulatuions?

When [..........] the new regulations?

You have to hurry up! They start the dinner in a minute!

You have to hurry! They [..........] the dinner!