改为一般疑问句:I bought presents for my friends last Friday_______ ________ ________ presents for friends last week?
问题描述:
改为一般疑问句:I bought presents for my friends last Friday
_______ ________ ________ presents for friends last week?
答
Did you buy
答
Did you buy presents for my friends last Friday?
答
who bought those
答
Did you buy
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答
Did I buy 借了助动词要还原 所以用buy 因为是过去式 所以借助动词did