pair of
1
Problem: The school library becomes so warm if it is full of users.
Solution: The school installs more electric fans.
2
Problem: The school campus becomes dirty during lunch, recess, and dismissal.
Solution: The pupil government an anti-litter campaign.
3.
Problem: Liza needs to buy materials for her project.
Solution: She saves part of her allowance to have enough money to buy the materials.
Problem: Kyle fails to wake up early for the field trip.
Solution: His mother calls up the school to inform Kyle's teacher.​