题目内容
When you’re learning to play the piano, _______ a good teacher makes a big difference.
A. have B. having C. and have D. if have
B
【解析】
试题分析:句意:当你在学习弹钢琴时,有一位好老师会有很大的差异。having a good teacher 是动名词做主语,故选B。
考点:考查动名词做主语的用法。
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