1 . _________ __________ _____________ ___________ ___________ (精通,掌握) English puts me at an advantage over other students. (根据汉语提示完成句子)
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2 . ________ (spend) four days enjoying the beautiful countryside in the city is a wonderful experience. (所给词的适当形式填空)
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3 . Our evidence shows that ________ time outdoors is good for kids’ eyes.
A.spend | B.to be spent | C.spending | D.spent |
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