To be an excellent runner, you must be prepared to much hard work.
A. go through
B. stand for
C. sort out
D. rely on
网友回答
(答案→)A. go through
B. stand for
C. sort out
D. rely on
解析：go through 通过；经历；检查；完成stand for 代表sort out分类；整理；整顿；rely on依靠，依赖。句意：为了成为一个优秀的跑步运动员，你一定要准备好经历许多艰苦的工作。