Dark clouds are a sign of rain.——这句话正确吗?为什么前面用“are”后面仍用“a sign”?

There are dark clouds in the sky.It will ( )soon.A.rain B.raining C.rainy dark clouds是什么意思 Dark clouds are a sign of rain.——这句话正确吗?为什么前面用“are”后面仍用“a sign”? It __ rain for there are no dark clouds in the skies.A.would not B.annnot C.should not D.might not It is going to rain soon,as there are dark clouds _________ our heads.A：on B：beyond C：far from D：over Look!There are dark clouds in the sky.Yeah,it is_____ _____rain There are many dark clouds in the sky.(用what提问) Look at the dark clouds .There （）（be）a storm 动词填空. dark clouds were flying in the The dark clouds s____ it will rain just noe dark clouds cover the whole The dark clouds look scary.同义句 空 空the dark clouds look! there are a lot of clouds today改为同义句 Some are thick.Clouds tell us a lot about weather. Cause clouds Are everything, magical horses are clouds. 1.The sky is covered with dark clouds.It ______ rain later.A.mayB.canC.could D.should It is going to rain soon,as there are dark clouds ___our headsA：on B：beyond C：far from D：over