His parents made a suggestion that hean hour for exercise every day.A. sets awayB. set asi

问题补充：

His parents made a suggestion that hean hour for exercise every day.

A. sets away

B. set aside

C. sets apart

D. set up

答案：

A. sets away

(答案→)B. set aside

C. sets apart

D. set up

解析：考查虚拟语气。suggestion建议，从句用虚拟语气。set aside留出；拨出，选B。