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