Quite a few young people nowadays have the habit of listening to background music while doing their homework.
【正确答案】现在有不少年轻人有一边做作业、一边听背景音乐的习惯。
【答案解析】①词组“have the habit of doing sth. ”意思是“有做……的习惯”。quite a few：很多的，相当多的。②翻译的关键是调整定语语序。