My father was watching me __when someone knocked at the doorA plays the pianoB playing pianoC playing the piano D play piano
问题描述：
My father was watching me __when someone knocked at the door
A plays the piano
B playing piano
C playing the piano
D play piano
答
C
答
选C。watch somebody doing sth. 同时，playing the piano 是固定搭配。
答
选C 整个句子是个进行时，“我弹钢琴和父亲监督我”是同时进行的 所以排除A D选项 而且弹钢琴是play the piano 所以是c
答
c
答
My father was watching me __when someone knocked at the door 1 分钟前 甜幂星月 | 浏览次数：7次A plays the pianoB playing pianoC playing the piano D play piano答：C译：我父亲正在看我弹钢琴,就在这时有人...