1, at/the library/English/of/books/in/the back/are/those
=> Those English books are at the back of the library.
2.learn/write/literature/about/essays/in/and/we/books/the
=> We learn books and write essays in the Literatue.
3.the bell/into/the students/ten/and/go/past/rings/all/the yard/half/at
=> At half past seven the bell rings and the students go into the yard
4.play/the/is/room/the guitar/Ba/in/learning/múic/to
=> Ba is learning to play the guitar in the music room.