题目内容
13．Betty is a good friend of mine．We often help each other．分析 Betty是我的一个好朋友，我们经常互相帮助．
解答 答案：mine．
根据所给首字母提示结合语境推测句意是"Betty是我的一个好朋友，我们经常互相帮助．"，根据设空处后面没有名词，表达的意思是"我的"，判断设空处缺少名词性物主代词mine，所以答案是：mine
点评 做这类题型，首先根据所给单词首字母明确句子所要考查的单词的拼写，再结合相关语法知识对单词做出形式上的变化．
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