Which two sentences contain misplaced modifiers?

Bobby returned his library book to the library that was overdue.

Listening to the ocean waves crashing on the beach, I began to relax from a hard day at school.
After walking onto the stage, the audience cheered loudly for the magician David Copperfield.

While visiting Cairo, Egypt, Alaina rode on a camel near the Great Pyramid of Giza.

Ready to hit a homerun, the player wearing the helmet stepped up to the plate.
While sitting on a bench, Francine shared her strawberry snow cone with her best friend Regina.

Question

Which two sentences contain misplaced modifiers?

Bobby returned his library book to the library that was overdue.

Listening to the ocean waves crashing on the beach, I began to relax from a hard day at school.
   After walking onto the stage, the audience cheered loudly for the magician David Copperfield.

While visiting Cairo, Egypt, Alaina rode on a camel near the Great Pyramid of Giza.

Ready to hit a homerun, the player wearing the helmet stepped up to the plate.
   While sitting on a bench, Francine shared her strawberry snow cone with her best friend Regina.

anonymous · Answer

The library was overdue ?
The audience walked on the stage?

directrix · Answer

I agree. @damonc2