The new books are of great use.They _well and _already.

both of the two new books are interesting.they are about the 改错The ways and means are proved of great use to us in our There are some new kinds of books in the library.they are___ There are some new books in the library They are ( There are all kinds of books and m_____in the new bookstore. 一道高一英语题 Books of this kind are popular to the young and they There are some new books in the library They are ()books Ach They are my new books.对my new books提问 The Harry Potter books are quite popular; they are in great A new medicine that the scientist discovered is of great use There are some new books in the school library.They are ( )b social the great books are read because they have been read—