The first aid work________ three parts，of which saving the people’s lives is the most important One.

At the school gate, you should _____ the safeguard with your student card.

During the Spring Festival, the police are ______ the public safety.

—Mum, it’s fine today. I want to skate on the lake. —Don’t you think the ice is too thin to _______ your weight?

 You’ll become more confident and stronger after you finish your senior school lessons. You see, hard work _____ character.