题目内容
16.She called me yesterday evening but I didn't hear it.Imust have been asleep.分析 她昨天晚上给我打电话,但是我没听到,我一定是睡着了.
解答 答案:must
解析:根据前面的"她昨天晚上给我打电话,但是我没听到"可知,她打电话来的时候我"一定"是睡着了,要不然就听到了电话声;故本题答案为must"一定"一词.must have done意为"一定做过某事",用于对过去发生的事情的肯定推测.
点评 本题考查单词填空,做此类题目时一定要仔细分析句子结构,确定所缺成分;再结合所给的中英文提示及题干中其他要求填入正确单词.

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