— ________ have you learned to play the

问题选择题

— ________ have you learned to play the piano?

— ________ five years ago.

A．How long, For

B．How often, For

C．How long, Since

D．How soon, Since

答案

答案：C

题目分析：句意：你学习弹钢琴多长时间了？自从五年前就开始学了。How long指的是“多长时间”；how often指“多长时间一次”；how soon指“多久之后”。答语中有ago，因此不能使用for，因此本题选C。