There are nearly one hundred foreign students in our university, most of _______ are from America and Australia.

Such things ___ you described in the report seldom happen now.

______ he explained it to me did I make sense of what he said.

It was at the very beginning _______ Mr. Fox made the decision _____ we should send more fire-fighters there.

________ anyone come to my office, please tell them I'm not available before four o’clock.

When I try to understand ________ that prevents so many children from being happy, there seem to be three causes.

—What’s wrong with my computer, Jack?
—Let me have a check. OK, it works now.
—You mean, nothing wrong with it, ________ ?

The young scientist has made such great achievements in his chosen field ______ nobody else can make.

If it       the climate, I would stay here much longer.

—Are there any English story-books for us students in the library?
—There are only a few, _______________.