Either you or one of your students _______to attend the meeting that will be held tomorrow.

—Mum, look! My trousers _____ short. Can you buy me a new _____?—OK.

With more forests being destroyed, huge quantities of good earth ___________ each year.

The number of people invited ______ fifty, but a number of them ______absent for different reasons

There ________ some tomatoes and milk in the box, but now there aren't any.