If you get into difficulties, don’t hesitate to （ ） help.

I am sorry that he （ ） in such poor health.

（ ） that the trade between the two countries reached its highest point.

He studies so hard to avoid （ ） at the bottom of the class.

We moved to London _____ we could visit our friends more often.

Let’s read the novel together, （ ）？

I've been playing tennis with Mary. But I was _____ by her.

A good many proposals were raised by the delegates，（ ） was to be expected.

I gave John a present but he gave me nothing______.

A news report is usually very short, （ ） when it is about something very important.

It is reported that a plane has ______ in the mountainous area near the borderline of that country.

Mary didn’t say （ ） she would return, but I believe she’ll be back for dinner.