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2.    We must be c_________ before danger.

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1.    My uncle suffered from a serious disease. Luckily he has r_____ now.

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40. In China, those who want to enter universities have to _______ the entrance exams in June.

  A. check through   B. work through   C. look through   D. go through

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39. The teacher told us that light _______ faster than sound.

  A. traveled   B. had traveled   C. is traveling   D. travels

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