before until after as soon as 的主句和从句要用什么时态?

before,after,until的用法与区别? It will be about three weeks____he cones back.A.after B.until C.since D.before it was not long____he got to know it.A.when B before C.after D until you must do ___ I told you A:after B:before C:until D:though Ben often played computer games ___ midnight A.before B.after until D.when Kitty always tells her mother____school.A.about B.after C.before D.until He didn’t tell me anything ______he left.A.until B.before C.after D.since并回答提问的问题(连词before与not...until的区别) I will know nothing about it______he tells me.A.until B.after C.before D.A and C You should make a good plan____you do anything important A before B after C though D until （ ）he had answered all the emails ,he went to have a bath A before B until C after -How long did you wait me?-___he came back at 10.A.until B.after C.before 为什么选A? while,when,until,after,before,as soon as 怎么用? when,until,after,while,before,because个造一个句子 ago,before,after,until,till等的区别 not until / after / before 句型转换的区别 英语翻译请分别用till until after before 翻译 （ ）11.Please wait here _______I come back.A.before B.until C.after D.when 请问哪个选项对? Please knock on the door ( )you came into the room A after B before C until D while