题目内容
4.The twins look almost alike,so many people have difficultydistinguishing (distinguish) them.分析 那对双胞胎看起来非常相像,所以许多人都难以分辨他们.
解答 答案是distinguishing.考查词组have difficulty doing sth.做某事有困难.句意是"那对双胞胎看起来非常相像,所以许多人都难以分辨他们."所以用动词distinguish的ing形式distinguishing.故答案是distinguishing.
点评 本题考查用所给单词的适当形式填空.首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变动.

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