- How often do you visit your grandparents, Tom ?
--
A. Half an hour.
B. Three hours.
C. Twice.
D. Hardly ever.
网友回答
A. Half an hour.
B. Three hours.
C. Twice.
(答案→)D. Hardly ever.
解析：how often意思是多久以后，表示频率，常用频率副词来回答，比如often，never，hardly，once a week等。