请问一道2012年五月SAT语法题?
请问一道2012年五月SAT语法题?
After the most popular surfboard designer in the United States (retires,many surfers were convinced of having) no alternative but to ride boards of inferior design.
D)retired,many surfers were convinced that they would have
E)retired,many surfers were convinced of having
我用括号代替了下划线,为什么E选项不对?convince sb of doing sth/sth 使某人确信某事,这里用被动翻译得很通顺啊,而且比D选项简洁,为何它错了呢?