题目内容：

She wanted to know _____[有理由]
how Tom finished the painting
how Tom finishes the painting
whendid Tom finish the painting
where Tom has finished the painting

优质解答

选第一个.首先这是一个从句,不用疑问句式,排除第三个.第二,主句是过去时从句就必须是过去时或过去完成时,就只有第一个.