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【题目】The tiger is now in danger of disappearing. So more attention ____ to protecting the tiger.

A. paid B. must pay

C. was paid D. must be paid

【答案】D

【解析】试题分析:句意:老虎现在有消失的危险。所以必须更多关注保护老虎。根据句意及题干分析此空应用被动语态,其基本结构是be+动词的过去分词,答案C只是指过去关注,所以排除,故选D

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