Question

【题目】-- ________ do you help the old in the old people’s home?

--Twice a year.

A. How soon B. How far C. How often D. How long

Answer 1

【答案】C

【解析】

句意：——在敬老院你多久帮助一次老人？——一年两次。A. How soon多久，提问in+一段时间；B. How far多远，提问距离；C. How often提问频度；D. How long提问，for+一段时间。根据Twice a year.可知是问频度，用how often，根据题意，故选C。