English exercise~Who played the piano last night?Mr Smith --A was B did C does D played告诉我为什么

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English exercise~Who played the piano last night?Mr Smith --A was B did C does D played告诉我为什么
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English exercise~Who played the piano last night?Mr Smith --A was B did C does D played告诉我为什么
English exercise~
Who played the piano last night?
Mr Smith --
A was B did C does D played告诉我为什么

English exercise~Who played the piano last night?Mr Smith --A was B did C does D played告诉我为什么
B
首先看到了过去时间词:last night,所以用过去时.前面是动词played,后面为了避免重复所以不用played,而用did代替.

选b,问句用的是过去时,所以回答也要用过去时,用played从句子语法来说没错,但和问句里的played重复了,这样使用不好,所以最佳答案选did,用以指代问句里的played.清楚了吧?