three years ___since I saw him last timeA pastB passedc have passedD have past选C为什么

three years ___since I saw him last timeA pastB passedc have passedD have past选C为什么 The Greens have been in China for three years.(改为同一句）The Greens ___ ___China three years ago .Three years ___ ___since the Greens came to China.___ ___three years ___the Greens came to China. three years His father died tow years ago.同义句 His father ___ ___ ___since two years ago. three years and three years是什么意思 three seconds、three years、three centuries three years ago作文 Three years passed是什么意思 一个英语句型转换题 Mike has been a party member for five years.Five years___ ___since Mike___the party.____ ____five years since Mike ___the party. ___since+_____短语 three years after 和after three years 区别? 请教three years later与three years ago的区别? Three years ago与Before three years的区别是什么? in three years'time.In three years一样吗 Three years has past.为什么“three years”可以看做单数? three years 与three years old的区别 for three years同义词求 over three years的同义词