【题目】It has been two years since this party________．Many people wonder whether it will stay on.
A.has been in power
B.has come to power
C.took office
D.came to power

【答案】D
【解析】考查时态。come to power“掌权，执政”，为短暂性动词短语，因第一个句子中的主句用了现在完成时，从句由since引导，故D项符合。