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  3. Professor Jeffrey’s lecture on the recycling of waste paper and other garbage wi

Professor Jeffrey’s lecture on the recycling of waste paper and other garbage wi

游客2025-04-26  6
问题 Professor Jeffrey’s lecture on the recycling of waste paper and other garbage will show ______ can still be improved.
选项 A、that the municipal authorities have done
B、how those the municipal authorities have done
C、how what the municipal authorities have done
D、that how the municipal authorities have done
答案 C
解析
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