It is thought that one billion people I the world, ________is half the word’s workers, earn their living by farming.
—Shall we go and have a picnic at the weekend? —__________.The weather forecasts say there might be a cold front by then.
—We'd better hurry; we'll be late. — __________. Do you really want to listen to the boring lecture?
. Mr Black was much disappointed to see the computer he had had _______ went wrong again.
They _______ on the program for almost one week before I joined them, and now we on it as no good results have come out so far.
Few pleasures can equal _______ of a cool drink on a hot day.