（2016·天津）_____the average age of the population increases, there are more and more old people to care for.
A. Unless B. Until
C. As D. While
（题文）(2016•天津) —I’m thinking of going back to school to get another degree.
—Sounds great! ____________.
A. It all depends B. Go for it
C. Never mind D. No wonder
（题文）(2016·天津) It was really annoying; I ________ get access to the data bank you had recommended.
A. wouldn’t B. couldn’t
C. shouldn’t D. needn’t
The cooling wind swept through out bedroom windows, ____ air conditioning unnecessary.
A. making B. to make
C. made D. being made
When walking down the street, I came across David, when I _____ for years.
A. didn’t see B. haven’t seen
C. hadn’t seen D. wouldn’t see
（2016·天津卷·单项填空）The dictionary is ______: many words have been added to the language since it was published.
A. out of control B. out of date
C. out of sight D. out of reach
