before用作连词,后面一般用什么时态,噢噢.没有固定的是么,I need one more stamp before my collection ----（complete）completed.为什么呢.

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• before用作连词,后面一般用什么时态,噢噢.没有固定的是么,I need one more stamp before my collection ----（complete）completed.为什么呢.
• live ---- the room
• 关于连词、复合从句的选择题1.He was walking on the pavement ________ a bike suddenly hit him from behind.A.while B.then C.when D.since2.You will end up in hospital ________ you don't give up smoking.A.until B.as C.unless D.if3.Get up early and do exercise every day,________ you won't have a strong body.A.but B.for C.and D.or4.He was so excited ________ he couldn't say a word at that moment.A.because B.that C.after D.before5.Could you please tell us ________?A.whent