Question

【题目】The number of the cars ________ greatly since 2008 in the small town.
A.had increased
B.has increased
C.was increasing
D.increased

Answer 1

【答案】B
【解析】句意：自2008年以来，这个小镇的汽车数量大大增加了。the number of the cars 作主语，看作单数。since引导的时间状语从句，主句使用现在完成时态。所以选B。