英语选择题（when,before,since,after)Nearly two thousand years have passed the Chinese first inventd the compass.A.when B.before C.since D.after主要说说为什么选它和那四个词应该注意的用法,浅层次的我会,但是深层的就

英语选择题before,after,when,sincehave you known each other for long?not very,____we started to work in the ABC Motor Company.A.before B.after C.when D.since 英语选择题b为什么不行?It is 3 years _c___ he joined the army.A.before B.after C.since D.when 求一道英语单项选择题解释.She'll never forget her stay there _____ she found her son who had gone missing two years before.A.where B.when尤其是错的答案为什么是错的. 还是英语选择题,说明原因,The holiday came to an end ( ) I knew it.A.since B.when C.before D.until 但是选C的话,主句的时态不是应该用过去完成时吗? 1道英语选择题 说明理由 谢谢1.five years passed _____he eventually found his missing son in the remote fishing village.A.after B.when C.since D.before 一个初二英语选择题（说明原因）The girl had a short rest and did her homework () she reached home.A.after B.before C.when D.since给出答案的同时说明原因,谢谢! 一道英语选择题快 I was half way back to the town where my mother lived___Susan caughtup with me.A.before B.where C.when D.that是不是选C?我不确定,而且这句话的前半部分是什么意思? 一道英语选择题,As is reported……As is reported,it is 100 years ____ Qinghua University was founded.A.when B.before C.after D.since为什么不能选C呢? 英语选择题（when,before,since,after)Nearly two thousand years have passed the Chinese first inventd the compass.A.when B.before C.since D.after主要说说为什么选它和那四个词应该注意的用法,浅层次的我会,但是深层的就 What day ______ it the day before yesterday?A.is B.was一道英语选择题,帮下忙, 英语选择题：Make sure ( )the door before you leave.A.to lock B.lock C.locking 几道英语复合句选择题1.It will not be long _____ you find your mistakes.A.before B.that C.when D.since2.The little boy had struggled to his feet ____ I could help.A.until B.after C.before D.since3.It was not nearly a month later ____ I recei 英语(初)选择题hao jia fen1.Factories must now clean their water___ away（A．）before it throws (B.)when it throws (C.)after it is thrown(D.)before it is thrown2.Wecan put our waste things in the dustbin and___it on the ground.(A.)don't throw 英语选择题英语选择题英语选择题 英语 选择题 英语,选择题 英语,选择题. 2道填空题,英语1.They _____ (reach) Si cuan before it was dark.2.We _____ (learn) 20 words by the end of last month.