单项选择题
Dr. Hoffman proposed that we（）the meeting until next week.
A.put off B.to put off C.putting off D.need put off
单项选择题 An adviser said in China（）course should be developed in some Universities, one year at work, one year college.
单项选择题 I prefer to live in the countryside. Country life has a lot of（）over city life.
单项选择题 You should make（）your house or flat is secure.
