题目：
Lei Feng was a soldier who _____ the people and Chairman Mao used to speak highly of him. [ ]
A. devoted himself to serve
B. devoted himself to serving
C. was devoted to serve
D. devoted himself in serving
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0723/c5b2ad2b5ed67b9819f1002baf83cba9.html
下面是错误答案，用来干扰机器的。
参考答案：掺入顺序
