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They were successful ______ a communication satellite.A、launchB、to launchC、in launching
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Cars moved very slowly in the 1920s, but they______move more quickly than in 1910.A．were t
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AC and DC generators are similar in that they _____.A.both generate alternating voltagesB.
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The Macphails and the Davidsons were in each others company because they _____.A．had simil
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They were caught in the forest, and ______ made matter worse was that it kept raining cats
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If I had realized that you were really serious in what you said ，I _____ more caref
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Everybody ______ in the hall where they were welcomed by the secretary.A.assembledB.accumu
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