Is Sarah reading a letter or writing a letter的意思是什么

Is Sarah reading a letter or writing a letter的意思是什么 l think the book,is worth reading 为什么是reading a good friend.Her name is sarah.错在哪里 Sarah is father work in a bank变为一般疑问句 Sarah is badly ill.She *** see a doctor at once He is reading a book. Millie is reading a n_____. The reading is a fool l reading a story book,改错 she is reading a book对reading a book提问 reading is fun l like it为什么用is 全部都改成一般疑问句I like reading books.She is a doctor whose name is Sarah.I went to school yesterday.He is my young brother.We study in the same class.They are playing basketball.It is rain.We will go hiking tomorrow.You have breakfast a 英语翻译It's a sunny day .The students are having a good time .They are going on a field trip .Look ,Chen Jie iscollecting leaves .Zhang Peng and John are watching insects under a tree .Mike is reading a book .sarah is drawing some animals .They 全部都改成否定句I like reading books.She is a doctor whose name is Sarah.I went to school yesterday.He is my young brother.We study in the same class.They are playing basketball.It is rain.We will go hiking tomorrow.You have breakfast at six Is the girl reading a book? Reading is a lot of (fun) He is taking and reading a book. He is reading a book 变成一般将来时