4. Larry and Susan rode their bikes to the library. After parking their
bikes in a rack, they rushed inside to hear the librarian read a story.
Next, they checked out some books and placed them in their book bags.
Finally, they rode their bikes back home. What did they do just before
riding home?
A. They checked out some books.
B. They put the books in their book bags.
C. They parked their bikes.
D. They read the books.​