Sequencing: Put the following statements in chronological order, using the numbers a-d, from chapter 15-20 'Holes'

a. Mr. Sir sees the sunflower seed sack next to Stanley.
b. The Warden supervises as the boys dig in the same spot for several days.
c. The Warden slaps Mr. Sir. Zigzag hits Stanley in the head with his shovel .
d. The Warden paints her fingernails in front of Stanley and Mr. Sir.​