The book on the sofe is an english book.划线句提问 on the sofa (
The book on the sofe is an english book.划线句提问 on the sofa ( )( )( ) an Enlish book? 用的是 Which book is 为什么呢? 什么情况下用what? The book on the sofe is an english book.划线句提问 on the sofa ( )( )( ) an Enlish book?