单选题 My best friend disgraced his athletics team by cheating.
【正确答案】 C
【答案解析】didn't respect:不尊敬;lost the honour:失去信用;brought shame on:使……蒙羞;didn't praise:不表扬,不赞扬。题中disgraced意为“使丢脸,使蒙羞”,可知C选项符合题目要求。