1 . The boy has a strong desire __________ (explore) the universe. (所给词的适当形式填空)
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2 . Westerners did not set out to e________ the world until the fifteenth century. ( v. travel to or around an area or a country in order to learn about it) (根据首字母单词拼写)
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3 . I look forward to ________ (explore) the countryside with my classmates. (所给词的适当形式填空)
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