He ______a sum of money every week for his old age.

He ______a sum of money every week for his old age.
A、sets up
B、sets out
C、sets against
D、sets aside
【正确答案】:D
【题目解析】:set aside:留出;set up:建立;set out:动身;set against:强烈反对。句意:他每周留出一笔钱以备晚年之用。​