He was asked to his class making a speech at the school opening ceremony.
A. represent
B. stand for
C. express
D. show
网友回答
A. represent
B. stand for
C. express
D. show
解析：考查动词和短语：选项A多用于指实物代表，如代表某人参加会议等；而选项B多用于抽象物体的代表；选项C意为“表达”；选项D意为“表明”等。根据语境，他被要求在开幕式上指代表全班同学做演讲，于是选A。