1 . 点名确认所有人安然无恙后，他们才放松下来，互相拥抱着。(roll call) (汉译英)
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2 . ________is known to all, the earth is round.（用适当的词填空）

3 . Many young people, most of _______are well-educated, realize the importance of the biodiversity on the Earth. (用适当的词填空)

4 . We have a registered letter for you. You can pick it up ___________ (在你方便的时候).

5 . Its ashy rocks, now dark, now light, told a story of past eruptions that might have warned the city _________ was to come! (用适当的词填空)

6 . The beach was rapidly cleared of people, just _________ the huge waves crashed the coast. (用适当的词填空)

7 . 无论发生什么，居民们都应该保持冷静。(状语从句；keep one’s head) (汉译英)
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