Question

【题目】你一到北京就给妈妈打电话，别让她为你担心。
You must telephone Mom as soon as you get to Beijing. Don't let her you.

Answer 1

【答案】worry；about
【解析】短语：worry about担心。let sb do sth让某人做某事，所以此处用动词原形，所以答案是worry about。