Although I often send e-mails to Tom,I have never seen him____

Although I often send e-mails to Tom,I have never seen him____

题目
Although I often send e-mails to Tom,I have never seen him____
答案
二楼不对,have 和 seen 是一伙的,后面那个空have是影响不到的.
就是动词原形reply
虽然我经常发Email给汤姆,可我从来没见他回过.
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