格林太太正在忙着练琴用英文怎么写 mrs green is busy ____ ____ ____ piano
问题描述：
格林太太正在忙着练琴用英文怎么写 mrs green is busy ____ ____ ____ piano
答
with practising her/the
be busy (with) doing sth忙于做什么，在英语里，前面可以加上所有格，如have one's dinner。
答
in practicing playing
答
practicing playing the
这道题出得非常好,因为有三个考点.
考点一：be busy doing
考点二：practicing doing
考点三：乐器前要加定冠词the
答
practising playing the
考点： 1. be busy doing sth 忙于做某事
2. practise doing sth. 练习做某事