2. We must be c_________ before danger.
1. My uncle suffered from a serious disease. Luckily he has r_____ now.
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
39. The teacher told us that light _______ faster than sound.
A. traveled B. had traveled C. is traveling D. travels
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