Bad luck! It’s too late.— It doesn’t matter. The concertforonly a few minutes. You can’t miss it.

h of the animal world, night is the time ______for sleep—pure and simple

An aging society is one ____ 10% or more of its population is over 60.

______, higher and higher,until it was asmall dot in the sky.

A mistake ______ have been made on our bill. We didn’t order any fish today.