问题
选择题
Without proper lessons, you could _____ a lot of bad habits when playing the piano.
A．give up
B．catch up
C．pick up
D．keep up
答案
答案：C
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Without proper lessons, you could _____ a lot of bad habits when playing the piano.
A．give up
B．catch up
C．pick up
D．keep up
答案：C