【導(dǎo)讀】A.a(chǎn)sB.sinceC.untilD.before. A.a(chǎn)slongasB.whileC.ifD.eventhough. A.ifB.unlessC.whetherD.that. A.whileB.themomentC.suddenlyD.once. A.whichB.whenC.sothatD.a(chǎn)sif. A.unlessB.sinceC.a(chǎn)lthoughD.when. A.a(chǎn)fterB.unlessC.untilD.when. A.sinceB.a(chǎn)fterC.beforeD.when. A.howeverB.nomatterC.a(chǎn)lthoughD.whatever. A.wheneverB.untilC.whileD.wherever