【題目】Cindy shut the door heavily and rushed out. No one in the office knew _____she was so angry.

A.whyB.whetherC.thatD.where

【答案】A

【解析】

句意：Cindy狠狠地關(guān)上門跑出去了，沒有人知道她為什么如此生氣。

考查賓語從句的引導(dǎo)詞。why為什么；whether是否；that作為賓語從句的引導(dǎo)詞，沒有實際意義；where哪兒。分析題干可知，“_____she was so angry”作“knew”的賓語，即為賓語從句，是完整的句子，不缺少必要成分。根據(jù)句意可知，此處表示“辦公室中沒人知道她為什么如此生氣”，故需用連接副詞why，表示“為什么”，why在從句中作原因狀語。故選A。

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