英语if用法I don't know if it ------tomorrow.if it -----,we'll go to the Great Wall.A.will rain ,won't rain B will rain ,doesn'train C.rains,won't rains D.rains ,doesn't rain 选什么?为什麽?if有什么用法

英语；I don't know 英语翻译i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know I don't know. 英语选择题〜求解QUQ20.I don’t know if I _____anyone at the party this evening.If I _____anyone ,I will get nervous.A will know,won’t know B will know ,don’t know B know,won’t know D know ,don’t know 答案写着B,求原因 I don't know if he ____(be) free tomorrow. what if I don't know anyone 的意思 You don't know even if I vanish from your what if I don't know anyone?同义句转换 What,I,anyone,don't,if,Know连词成句 What,I,anyone,don't,if,Know,连词成句 I don't know if he ____ ( come ) Hao can i know ,if you don't say “i don't know you know i don't know I don't know is whatI don't know if I can still not able to persistDon't know if I couldDo not know What if I don't know anyone?同义句What __ __ __ if I don't know anyone I don't know if I will go there.I don't know ___ ____ go there. I don't know if he_.if he _home,please let me know.(return). I don't know if he will come tomorrow i think he if he free