----When _____the magazine______?---------A week ago.A.was,come outB.did.come outC.is ,come out D.does,come out

when the sun is shining _____the sea . When is Wang Ni ma 's birthday 请记住离开时关灯.Please remember ____ ____ _____the light when you leave You should wear trainers when you have a trip(同义句)Trainers_____ _____ _____the trip When _____the Party___?A.was ;founded B.has been found c.IS;FOUND d.was;found Do you know _____the Beijing Zoo A.when did they visit B.when will they visit C.when they visited D.when they will visit MA ma My mother learned English _____the radio when she was young.A.by B.on C.in D.with When shall we meet tomorrow?Let's meet_____ 8:30_____the morning.A at;in B at;on what were you doing when the teacher _____the classroomA.entered toB.entered intoC.entersD.entered选什么 为什么 ------When did your farther _____the Party?------In 1993.A.take an active part in B.take part inC.join _____the flight to shanghai will be delayed is _____I`mespecially worried about1.whether ,what2.whether ,that3.when what4.How,thatxiele _____the children have fun,parents can take dance lessons on the beach.A.When B.IfC.While D.Once为什么? Mr.White had hardly finished the speech _____the students started cheering.A.when B.while C.as D.after ----When _____the magazine______?---------A week ago.A.was,come outB.did.come outC.is ,come out D.does,come out _____the people have become masters of their own country that science can reaily serveA only when B it’s only when 选B 为什么 The last time I went to hainan was in March, _____the weather was beautiful.A.while B. which C. When D. That .为什么是when. 介词加一个which可变成when.这里哪里有介词啊?