Teresa carga (sus) libros en su mochila
'sus' = 'her'
It means "In my backpack, I have two books" in Spanish.
St teresa of avila
It could be both, most likely putting books into your backpack
Bolsa de libros is "book bag"; you can also put your books in a mochila, a knapsack/backpack.
I have lost my backpack.We should go on a backpack trip.He stuffs the water bottle into his backpack.
you really don't have that much books so I think a backpack is best (people might kick your roller backpack in line)
Depends on the size of the books.
The mass of a chapter book is unpredictable. Is it hard bound or soft cover? How many pages is the book and what kind of paper is used?
If your talking math books or text books... then about 3-5 depending on the backpacks size
I cram my backpack full of books.
Spanish books
He probably just needed something to carry his books with