Do you know Mozart? — Of course. He wrote _____ of beautiful pieces of music.

We must try our best to stop pollution ______ a low-carbon(低碳)life.

Would you mind ______ the door? It’s cold outside.— OK. I’ll do it right now.

Mr. Bean’s movies are always very_________ and many people are made to laugh.

Sometimes I feel ________ between meals, so I eat something.