12．From thesadness （sad） on her face，we can guess something bad has happened to her．

分析 從她臉上悲傷的神情，我們可以猜到她發(fā)生了不好的事情．

解答 答案：sadness．
通過分析句子結(jié)構(gòu)可知，空格前面是定冠詞the，所以空格處需要用名詞來填空，這個句子的意思是"從她臉上悲傷的神情，我們可以猜到她發(fā)生了不好的事情．"結(jié)合給出的單詞提示sad，故填sadness．

點評 首先要掌握句子的意思，然后結(jié)合具體的題目以及給出的單詞提示，就可以確定正確答案．

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