shock at 怎么用?The mother was shocked at her only son —— when she was away for work.
问题描述：
shock at 怎么用?The mother was shocked at her only son —— when she was away for work.
The mother was shocked at her only son —— when she was away for work.
A to do something illegal B doing something illegal C to have done something illegal
D done something illegal
答
shock at..对.吃了一惊 可以接sb.doing sth.
选B