问题
选择题
He was admitted to our school two years ago, a top school in our hometown, _____ he has been crazy about reading electronic novels, killing time.
A．after that
B．since that
C．after when
D．since when
答案
答案：D
题目分析：句意：两年前，他被我们学校—镇上的重点学校录取，自从那时，他就痴迷于阅读电子小说，消磨时光。这里使用定语从句，先行词是two years ago，因为两句话没有连词，所以判断是定语从句，用介词since+when引导定语从句，所以选D。