— times a week do you go to the library? — Twice a week.A. How longB. How soonC. How ofte

问题补充：

— times a week do you go to the library?

— Twice a week.

A. How long

B. How soon

C. How often

D. How many

答案：

A. How long

B. How soon

C. How often

(答案→)D. How many

解析：句意：—一周你去图书馆多少次？—每周两次。How long 多长时间， how soon多长时间以后 how often多长时间一次how many多少，后跟复数名词。从语境中可看出，问多长时间一次，如果没有times a week,要用how often,它的干扰性很大。因此选D。

考点: 考查疑问词的用法。