2. 外语
  3. It is high time that we _____________(保护濒临灭绝的动物)．

It is high time that we _____________(保护濒临灭绝的动物)．

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问题 It is high time that we _____________(保护濒临灭绝的动物)．
选项
答案protected the endangered animals
解析 虚拟语气：假设性虚拟语气句型it is (high) time (that) we did sth．， that 引导的从句中谓语动词应使用过去式。词汇：endangered(有危险的)
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大学英语四级

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