It is only when we cannot see clearly _____ we come to see ______ important our eyes are.
A. that; what B. which; what C. that; how D. which; how
Further space exploration has been _______ with the rapid development of China’s science and technology.
A. made it possible B. made possible
C. made it possibly D. made possibly
Mr. Fox fell ill, thus __________ it necessary for us to find another person for his job.
A. having made B. made C. making D. to make
Recently ,the European Union(EU) has decided to provide ＄30 billion of emergency fund to help ________ the financial crisis that is happening in Greece.
A. release B. represent C. relieve D. recommend
--- Did you often e-mail your family during the first year at university?
--- No. I was so busy meeting new people that I didn’t write to my family as I _____.
A. ought to B. should do C. should have written D. should have
Cable TV began in 1948 in the USA, but it took 50 years________ 66 percent of American households had it.
A. before B. after C unless D. since
