关于英语定语从句中的一个小问题,请帮忙填空,
问题描述：
关于英语定语从句中的一个小问题,请帮忙填空,
He is the only one of our classmates who ____been to Shanghai .
He is the one of our classmates who____been to Shanghai.
He is one of our classmates who ___been to Shanghai.
答
has has have
第一句跟第二句都是指只有他一个去过上海,第三句则是去过上海的其中一个.