Without proper lessons, you could a lot of bad habits when playing the piano．
A. break up
B. pick up
C. catch up
D. give up
网友回答
A. break up
(答案→)B. pick up
C. catch up
D. give up
解析：考查短语。break up打破，打碎；pick up拾起，获得，养成；catch up跟上，赶上；give up放弃。没经过正规训练，弹钢琴时你可能会养成很多坏习惯。