Question

【题目】We have been good friends since _______.
A.2 years
B.2 years before
C.we are 14
D.2 years ago

Answer 1

【答案】D
【解析】句意：自从两年前我们就是好朋友了。since后跟时间点或者一般过去式，表示自从……到现在，主句用现在完成时。故选D。