连词成句.swallows ,in ,fly ,will,autumn ,to,south,the

连词成句.swallows ,in ,fly ,will,autumn ,to,south,the Swallows fly to the south before winter ( ) Swallows fly to the south before winter_____ When autumn comes,swallows go to the south. Swallows fly to the south before winter comes"he says. 初三英语习题The swallows know when __to fly __ south.为什么填 to fly , Swallows fly to the south before winter comes .中文,为什么用comes而 Birds fly to the south ()autumn.(填介词） 连词成句 they fly america to will year next on to the foot park the will do think in you sky you fly(?) 连词成句 连词成句：food,it,a,to,is,time,give,for,thanks,the,in,autumn I,will,hope,the,rockets,to,moon,I,fly连词成句