The study of nearly 10,000 people showed that those who drank more than two cups of coffee or tea per day developed the disease at half the rate of those who drank _________ than one cup each day.
—How nice it tastes! —In fact,this delicious cake is not difficult________.
One of the greatest benefits of stamp-collecting is that they are based on common interests,________ appearance,age or wealth.
It is ________ he often fails in exams ________ makes his parents worried about him.
— Do you think that housing price will keep ________ in the years to come? — Sorry,I have no idea.
After two months’ training,the astronauts are ________to adapt to the conditions of weightlessness.