Although________happenedinthatdevel

发布时间：2020-07-26 04:42:06

Although ________ happened in that developed country sounds like science fiction, it could occur elsewhere in the world.A.thisB.whatC.howD.it

网友回答

B解析让步状语从句中又带有一个主语从句，由what引导，what在从句中作主语。
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