问题
选择题
—How wonderful you are playing the piano﹗ do you practice it a week?
—Twice. Practice makes perfect.
A. How often
B. How soon
C. How long
答案
答案：A
题目分析：句意：你钢琴弹得真好！你一周练习几次？两次。熟能生巧。A. How often“多长时间一次，表示频率”B. How soon“多久，多少时间之后”；C. How long“有多久”。结合语境，故选A。