B: She is helpful and friendly.

A.How. .. likeB.Why.. . likeC.What. .. thinkD.What. .. like

【答案】C

【解析】

句意：A：你认为她怎么样？B：她很友善并且很乐于助人。

由固定句型What do you think of sb？=How do you like sb？意为“你认为某人怎么样？”由所给空后面的of可知，应该用的是What do you think of her？故答案选C。