You didn't hear us come back last night. That's good. We tried ______ noisy.

Remember ______ the book, when you have finished it.

Some people's greatest pleasure is ______ .

. It's very kind ______ you ______ say so.

It is no good ______ today's work for tomorrow.

It's no use______ with him. You might as well ______ with a stone wall.

I couldn't understand ______ at the poor child.

We can't understand ______ a decision until it is too late.

Alien said that his trip was _______.

---- What do you think about English?         ---- It's a difficult language _____.