A pop star usually leads quite a hard life, with a lot of traveling _________heavy schedules.
A． with regard to
B． as to
C． in relation to
D． owing to
正确答案：D
withregardto的意思是“关于”；asto的意思是“关于就……而言”；inrelationto的意思是“关于涉及”；owingto的意思是“由于因为”题干的意思是：“歌星过得很辛苦；因为时间安排得很紧他们常常需要辗转各地”
