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_____ he is very busy, he spends at least two hours every day surfing the Internet in order to find out the latest development in science and technology.
A. Even though B. When C. Unless D. Whether
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Several weeks had gone by _____ the head of the gallery realized the painting was missing.
A. after B. before C. since D. that
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The airline has a booklet _____ will tell you most of the important information to Europe.
A. in which B. about which C. / D. that
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Students can easily fall behind in their studies ____ they don’t manage their spare time carefully.
A. though B. if C. since D. until
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He warmly congratulated them on _____ they had achieved in science and technology.
A. that B. where C. what D. which
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_____ of concrete and steel, the
A. Building B. Built C. To built D. Having built
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Would you consider lying to a good friend to avoid ____ your friend’s feelings?If so, what kinds of things would you lie about?
A. hurting B. to hurt C. being hurt D. hurt
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It is not until recently ______ the scientists have found proof of there being water on Mars.
A. when B. that C. how D. what
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______ our horizons of thinking, but it also saves us time and energy.
A. Not only does the Internet expand B. Not only expands the Internet
C. Not only the Internet expands D. Not only the Internet does expand
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An excellent way to help memory is to connect information with pictures, which ______ as a memory-link method.
A. considers B. is considering C. is considered D. considered
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