“Day has passed.Another day again

“Day has passed.Another day again Many a day _____ (have /has ) passed since she wet away. ten years have passed还是has passed 2 years has passed还是have passed was passed和has passed的区别? What has passed is past . A English choiceAs has been announced in today's newspaper,the new law will come into effect the day it__ a.is passed b.wil be passed c.has been passed d.is to be passed /please help me translate the meaning into chinese and whice answer should i cho the sweet day so passed away six years__since she left chengdu.A has passed B had passed C passed 一定要说明理由 Five years _____since he died.A.have passed B.has passed C.is passed D.are passed passed passed passed Three months __ since he __ hereA have passed;leftB has passed;leftC has past;has leftD has passed;was away More than two months ____ already.A.passed B.have past C.has passed D.have passed为什么是单数? Ten years_____ by since he left here.A.have passed B.has passed Five years has passed since we met last .为什么不用have passed? two years have passed 还是two years has passed还是两个都可以?