【題目】How strange _____ is that the students are so quiet in the classroom!

A. this B. it C. / D. that

【答案】B

【解析】

試題分析：B考查it作形式主語。根據(jù)分析可知此處為形式主語,結(jié)構(gòu) 真正主語為the students are so quiet in the classroom并且意思完整。句意: 學(xué)生在教室里如此安靜是多么的奇怪啊!故選B

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