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We will soon discuss the problem we should take some effective measures to protect the animals and plants in our region. A. if B. whether C. that D. ever since 【查看更多】

 

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We will soon discuss the problem ______we should take some effective measures to protect the animals and plants in our region.
 A. if     　　　　　B. whether  　　　 C. that    　　　　　　 D. ever since

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