The room is dark. The children can't study in it.

The man was very clever. He could know what to do in such situations.

It was too late. We could not have breakfas at home.

I'm very tired. I can sleep all night.

The film was so exciting. We saw it twice.

We had little milk. We couldn't make a big cake for our fiend.

John speaks so softly. All of us can't hear his voice.