【单选题】【消耗次数:1】
Keep a __________attitude and good things will happen.
negative
positive
post
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相关题目
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①  which they are happening
②  they are happening
③  which they happen
④  they have happened
【单选题】 Televisions enable us to see things happen almost at the exact moment _____.
①  which they are happening
②  they are happening
③  which they happen
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①  which they are happening
②  they are happening
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①  Exercise
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①  calls for
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①  正确
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①  正确
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