Our students are free to study （ ） interests them.

He works too hard.That’s _____ is wrong with him.

Dress warmly, （ ） you will catch cold.

She （ ） tell white lies to make people feel better, to smooth things over.

Some cities have passed laws that allow coal and oil_____only if their sulfur content is low.

I don’t like to _____ a room with a stranger.

We have got to _____ a new way to solve this problem.

Peter was （ ） that there should be no misunderstanding on that point.

They are very jealous （ ） his reputation.

Once you arrive in a new place, you’d better （ ） the local custom.

My mother suggests that we _____ eat out for a change this weekend.

（ ） his last word, he got into a taxi and disappeared in no time.