Bill said to Alice he would help her but Alice refused him.

--Tom, it's cold outside. ______ your coat when you go out.

--OK, Mom.

Zhou Feng has learned English for many years, but he can ______ understand the English speakers.

Three quarters of books are written in English.

You should leave at once.

Don't laugh. I mean it.

Wherever you live, you should protect the environment.

I take pride in my work.

I got up late yesterday, so I ______ to the bus stop.

--Why were you late?

--The bus broke ______.