为什么不是I don't know呢?what other things don't I know about America?

为什么不是I don't know呢?what other things don't I know about America? I don't know the w[ ] to the library. I don't know her.I'll give it to ber.为什么这两句都用her呢?说明 I don't know. I ____its mouth _____big .A.know,isn't B.don't know ,isn't C.don't knows ,is 哪个对.为什么呢? I don't know your name. Can you w＿ it doen?这道题怎么做呢 I don t know where to travel.为什么不是where to travel to? I don‘t know her 为什么最后要用her不是用she I don't know what to do.为什么不是I don't know what to be done.请高手解释用法,谢谢! what's this in english?--Sorry,I don't know how ———it.say为什么不是to speak呢? 为什么?I dont know her.后面有用her,而不是she呢? “i don't know you know i don't know Does anybody know Tom?回答是Yes,Mary does.为什么不是No,I don't know him. I don't know w———the answer is right or wrong.填什么?为什么? 不知道翻译为什么一定是I don't know 而不能是Don't know I don't know,nor do I care.为什么中间用句号啊?不是两个句子吗>> Lucy hasn't come yet.I don't know what______(happen) to her.答案是has happened ,为什么呢? I don`t know who invented the telescope,but I think it is a most useful invention . 为什么后句是a 不是the 啊 好奇怪 加分不是问题呢