Question

【题目】How time flies! Three years ________ since I became a middle school student.
A.has passed
B.have passed
C.passed
D.passes

Answer 1

【答案】A
【解析】由since“自从”可知此句为现在完成时，故排除C、D项；three years指的是时间，故用has即可，故选A。