me most was that the young boy who had lost both arms in an accident could handle a pen

问题补充：

. me most was that the young boy who had lost both arms in an accident could handle a pen with his feet.

A. That amazed

B. It amazed

C. Which amazed

D. What amazed

答案：

A. That amazed

B. It amazed

C. Which amazed

(答案→)D. What amazed

解析：本句应注意：这是一个what从句作主语的典型句子。本句的意思是：最令我惊讶的是，这个在车祸中失去双臂的小男孩能够用脚使用钢笔。