I don't know if his idea will ——（有效）

I don't know his _______(话) I don't know his ( )ddr( )ss I don't know if his idea will ——（有效） I don't know if his idea will _ _ (有效). 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 whether I should take his advice or not. whether 能用if替换吗?why? 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 know his birthday but i don't know his a( )30分钟!过期作废 I don't know his job.he is a doctor I don't know his job.he is a doctor I don't know is whatI don't know if I can still not able to persistDon't know if I couldDo not know