Question

【题目】My brother played the piano yesterday．(用at 9 o'clock yesterday代替yesterday改写句子)
My brother at 9 o'clock yesterday．

Answer 1

【答案】was；playing；the；piano
【解析】句意：我弟弟昨晚弹了钢琴。代替后，分析句子可知，时态有一般过去时变成了过去进行时。故填was playing the piano。