there is going to be +raining?rain?rainy?

there is going to be +raining?rain?rainy? There is going to be -----this evening.这个空应该填rain还是rainy?为什么 几道初二英语填空题There is going to (rain/be rainy) tomorrowOf my par There is going to be rain. it is going to rain和it is going to be rainy有何不同 there is going to be rain为什么不是rain what is the weather going to be?it's________A raining B rain There is going to be ___this afternoon.(rain) There is going to(be rain)in the evening. is about to rain、 is going to rain 、 is raining 、is to rain有 It's going to ___tomorrow.A.rainy B.rain C.raining(选哪个） It's going to __________.A.rain B.rainy C.raining