Question

【题目】Linda thinks ______ conversations with friends in English is really helpful.

A. having B. has C. to having D. have

Answer 1

【答案】A

【解析】句意：Linda认为和朋友们用英语谈话真的是非常有帮助的。having有，动名词形式；has是have的第三人称单数形式；to having是介词to后跟动名词形式；have是动词原形。句中thinks后面跟了一个宾语从句，从句中having conversations with friends in English 是主语，故应该用动名词形式做主语，选A。