six years__since she left chengdu.A has passed B had passed

six years__since she left chengdu.A has passed B had passed Six years has passed before I realize it.It was 12 o'clock b Half an hour has passed since the train left 英语翻译　　Almost a month has passed had I gathered up all my tea Ten years had passed,I found she had___.A:a little white hai This has passed a lifetime什么意思 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? Ten years had passed.I found she had___________ Mr Green asked Lily whether she had passed the ( )