Plants can （take in ） carbon dioxide and release oxygen,so they are beneficial to our health
植物可以吸收二氧化碳释放氧气,所以他们对我们的健康有益.
Most schools have plans in place for （ responding） to fires,fights,medical emergencies and other situations that call for quick assessment and decisive action
多数学校对于火灾、斗殴、急救和其他需要快速评估和处理的情况有应急预案.