问题描述：
Have you bought it?--When( )you ( )it?
如题：是用一般过去时还是现在完成时? 还有I have bought it.--When ( )you ( )it? He (when还have gone)to see his father three days ago. 为什么这样填啊?
如题：是用一般过去时还是现在完成时? 还有I have bought it.--When ( )you ( )it? He (when还have gone)to see his father three days ago. 为什么这样填啊?
问题解答：
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