I don’t know _____makes her afraid of having her business discussed.A.what it is about Mary thatB.that is it abut Mary whatC.what is it about Mary thatD.that is about Mary what
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A解析在通常情况下，强调结构的特殊疑问句形式为“疑问词+is it that…?”，但此题强调的是宾语从句，其语序与陈述句相同，所以是what it is…that…