We’re not going to operate on him it is absolutely necessary. A. if B. unless C. as ——青夏教育精英家教网—

摘要： We’re not going to operate on him it is absolutely necessary. A. if B. unless C. as long as D. so far as

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从所给的四个选项中选择最佳答案

We're not going to operate on him ______ it is absolutely necessary．

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A．if　　　B．unless　　　C．as long as　　　D．so far as

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