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People should spare no efforts to protect the environment.
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— People should spare no effort to protect the environment.
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请问We should make every effort to protect our environment.
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Everyone should try ___ best to protect the environment.
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should we restrict development to protect the environment?辩论
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一个英语词组的疑惑,是to spare no efforts to do还是to spare no effort to
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People think ＿＿＿more and more ＿＿to protect the environment．
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we should do something good to protect the environment from
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We should do everything we can to protect the environment
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spare no effort to的effort要否加s?