______ is that book?—About 10 Yuan.[ ]

____what happened, he would not say a word.[ ]

Since the outbreak of the disease, 90 patients have been to have the illness and other suspected patients are still under examination.

I could tell by the way ____ he looked at me____ he was annoyed.–So don’t play such tricks on him any more.

It is thought that one billion people I the world, _is half the word’s workers, earn their living by farming.