she had left the shop 什么 I arrivred.when after until选哪个填进去?

Before she left on the trip ,she had trained hard. After she had left,they arrived the station. Alice left the book where she had found it. I couldn't understand（ ） the baby alone.A.why she left B.why did she leave C.why had she left D.why she had left As she left the house she had locked the door.语法正确吗 I can not understand （ ）the boy alone?A why she left B why did she live C why she had leftD why had she left Helen _____ her keys in the office so she had to wait until her husband _____ home.A.had left; comes B.left; had come C.had left; came D.had left; would come she ran to the station only ______(find)that the train had left 2minutes before ()arriving at the meeting room,Tina discovered that she had left the sample 16.Mrs Smith----- her keys in the office so she had to wait until her husband ------home.A has left;comes B left;had comeC had left;would come D had left;came Helen _______ her keys in the office so she had to wait until her husband ________ home.a.has left;comes b.left;had come c.had left;came d.had left;would come要有解析, Helen___her keys in the office,so she had to wait until her husband___home.a.has left,comeb.left,had come c.had left,come d.had left,would come帮帮忙啊~~~解释一下~~~ 10.Helen ___ her key in the office so she had to wait until her husband___ home.A.has left,comes B.left,had comeC.had left,came D.had left,would come详细解析为什么选C Helen ( ) her keys in the office so she had to wait until her husban ( ) home.A.has left,comes B.left; had come C.had left; came D.had left; would come答案是选C把,为什么 It was the first time she had ever left her mother land.中文翻译 When Jenny came to Britain,she had to get used to (drive)__on the left When Jenny came to Britain,she had to get used to(drive) ________on the left. 求翻译：She took up the narrative where John had left off.