while reading 和post reading

while reading 和post reading post-reading task 尤其是post post-reading是什么意识? post-graduate和post graduate do think while reading是什么意思 post 的过去式和过去完成时都是post post 和 get 是不是 post 安全? post 和 get 是不是 post 安全? 新编大学英语3 Post-Reading课后答案~感激不尽~ when和while有什么区别?怎么课本的是 I did my homework while I was reading a book.而 练习是 I was而 练习是 I was doing my homework while I was reading a book.究竟是前后都是过去进行时 还是while加过去进行时啊?.. Post post warranty 和 post-warranty 是什么? post和mail的区别 post和mail的区别 get和post哪个好? get和post哪个好? at post office 和in the post office一样吗?