I try to understand __________ that prevents so many Chinese from being as happy as one might expect.
—The concert won' t start till seven.Why____ so early? —You know I don' t want to be at the traffic there.It' s terrible during the rush hour,
What he had done ____ a lot about his honesty.
—What bad luck! I had a cut in salary yesterday. —____.I warned you not to be late again and again but you ignored it.
The____of hanging clothes across the street is a common sight in many parts of the city.
____people from all walks of life are working hard to create ____new Hefei.