A great deal of advanced science and technology has been _______ since China carried out the reform and opening policy.
The general demanded that the soldiers _____ at the village before 5p.m. to rescue the victims of the earthquake.
Jack doesn’t smoke now, but he _______ for almost twenty years.
The manager says he really can’t ______to wait another day, because he is so busy.
______ of danger in the street at night, she had to go home, with a friend _____ her.
Privatecarsarerequiredtotaketurnsoffroadsoneoutoffive weekdays___thetrafficpressure.