I want to know if it ____(not rain) tomorrow

I want to know if it ____(not rain) tomorrow 宾语从句（时态）“ i want to know if it will rain tomorrow,If it rain i don not know if it( rain )tomorrow.if it (rain Do you know ____?A.if it will rain tomorrow B.if it rains to we'll go to the park if it ____ (not rain )tomorrow 为什么I don't know if it will rain tomorrow I __(not go ) to the zoo if it __(rain) tomorrow. I will not go to the park.If it ———— tomorrow(rain)谢谢 If it does not rain tomorrow,I will go to her home.为什么用助动词 If it _____(not rain) tomorrow,I ___(go) there. If it _____(not rain) tomorrow,I ___(got) there. If it---------(not rain) tomorrow,we-----(go)to the park