问题
选择题
It is most instructive lecture that I _______ since I came to this school.
A．attended
B．had attended
C．am attending
D．have attended
答案
答案：D
题目分析：从时间状语 since I came to this school可以看出要与现在完成时连用。故选D。句意，这是自从我来到这个学校以来听过的最有教育意义的讲座。
点评：时态的考查，一要注意时间状语，二要注意上下文的语境，找准突破口