The reason why he didn't come to school was ________ he was ill.
It was really very dangerous; you ____ him seriously if I didn’t stop you.
—What do you think of the hotel here? —Oh, wonderful! We ____ a better one than this.
We are all looking forward ______ the Great Wall during the National Day.
_________ production up by 60%, the company has had another excellent year.
They are talking so warmly and it looks _________ they had been old friends.