—He got his first book published. It turned out to be a bestseller. —When was ________? — ________ was in 2000 when he was still in college.
—Hey, taxi! —, sir? —Can you take me downtown?
—I don’t suppose Jimmy could have done well in the mid-term exam last week,______? --- ______ he almost failed in the exam.
It is strange that such a thing ______ in your school.
As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil.
Urban crowdedness would be greatly relieved if fares ________ on public transport were more reasonable.