单选题Believeitornot I’msurethatis____

问题补充：

单选题Believe it or not, I’m sure that is ________ people call the six sense．A.whenB.whatC.whichD.why

答案：

B解析此处用what引导表语从句，而what在表语从句中充当call的逻辑宾语。A、D项是副词，不可做宾语；which语义不对。