I don't know if the meeting ------tomorrow ,if it-----on time ,I will goA is held ; will be heldB will be held ;is held为什么是B不是A

I don't know if I____anyone of the party this evening..填know 还是 will 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 If we should join the club=I don't know____ ____join the club What should I do if don't know the way to the station(改为同义句) I don't know the......the question 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 she has turned off the light.为什么要使用现在完成时 宾语从句I don't know _ to visit the old man.A whether B if If you don*t ( ) (提示：know the meaning of ) me ,i*ll say it again. If you don*t ( ) (提示：know the meaning of ) me ,i*ll say it again. I don't know if he __ to the movie this evening.If he wants,so ___ I. 英语翻译Sometimes I don’t answer because I don’t how to talk about something that I don’t want to talk about,meanwhile I don’t know how to answer the others if I don’t want to talk. why?but i don't know the I don't know the place.是什么意思? 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