十分感谢ll the specialists are trying their best to reduce the people's fear( )"superAll the specialists are trying their best to reduce the people's fear( )"super influenza"will affect the world seriusly and kill more people in a short time.AwhichBthat CwhetherDbecause 选择什么 为什么D不行 是不是还能填of which 为什么 which和that 不应该是一样的用法吗 在定语从句中 急
问题描述：
十分感谢ll the specialists are trying their best to reduce the people's fear( )"super
All the specialists are trying their best to reduce the people's fear( )"super influenza"will affect the world seriusly and kill more people in a short time.
AwhichBthat CwhetherDbecause 选择什么 为什么D不行 是不是还能填of which 为什么 which和that 不应该是一样的用法吗 在定语从句中 急
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