Swallows fly to the south before winter comes .中文,为什么用comes而不用will come ,或is coming,或Is going to come

连词成句.swallows ,in ,fly ,will,autumn ,to,south,the Swallows fly to the south before winter _____ .A.will come B.is coming D.is going to come swallows in fly will autumn to south the 连成一句话he will eighteen be year next连成一句话 Swallows fly to the south before winter ( )1.will come 2.is coming 3.comes 4.is going Swallows fly to the south before winter_____这个填will come还是is coming还是comes 还是is going to come呀 Swallows fly to the south before winter comes .中文,为什么用comes而不用will come ,或is coming,或Is going to come Swallows fly to the south before winter comes .中文,为什么用comes而不用will come ,或is coming,Swallows fly to the south before winter comeshe says.＂But why don,t cats and dogs do the same Fox lift his hand as usual.Yes,Fox?says the te Where the swallows fly dream blooms 这句英语的意思是? Swallows fly to the south before winter comeshe says.＂But why don,t cats and dogs do the same Fox lift his hand as usual.Yes,Fox?says the teacher happily.中文 When autumn comes,swallows go to the south.______ ______swallows go to the south. FLY TO THE fly me to the fly me to the moon I WANNA FLY TO THE fly the plane to sp. Fly To The Sky的《 Fly to the sky to you. In winter ( ) do not fly southA.ducks B.geese C.sparrows D.swallows