were it not for the sun中for怎么解释啊

Were it not for _____ the clouds ,you would find the airplane in the sky easily.A Had it not been for B If it were not C If it had not been for D Were it not for选什么?为什么? were it not for the sun中for怎么解释啊 ------------for the heavy rain.i should have been here earlier A if it were not B were it notC had it not been D if it wasn't ____ the sun,nothing could live on the earth.A.Were it for B.Were it not forC.It were for D.If it is not for请说明原因, __,man could not live at all.A.were it not for the sun B.had it not been for the sun If it _ for the rain,we _ the picnic yesterday.A were not; could have hadB were not; could haveC had not been; could have had _____,we could have been in time.答案选的were it not for the storm,为什么不用were it not the storm B___ it or not ,we were left waiting in the rain for two hours ()for the snow yesterday ,we would have gone to climb the mountain.a,if it were not b.had it not been c.if it was not d.were it not 求详解语法句式 _____ the expense,I _____ to Italy.A.If it were not,go B.Were it not for,would go C.We ----- the timely help from the geneal public,our company would not be so good as it is.Which is not right?AHad it not been for B but for C Were it not for D Without ＿for the timely investment from the general public,our company would not be so thriving as it is.A.Had it not beenB.Were it not beenC.Be it notD.Should it not be为什么不是选B嘞 If it were not for the fact that Anne___ill,I would invite her to the show. 要用is?表事实? In the work efficiency of the dormitory always very low,so if it were not for time only urgent,I If it had not been for与If it were not for有什么区别? If it were not for the fact that he ________ ill ,he would finish it.A.is B.be C.were D.am 请问,该怎么理解were it not for