Rewrite the sentences using the adjective + to infinitive: 1. Keeping people from littering is very difficult. → It is ......................................................................................................... 2. She must empty he kitchen garbage. She is not pleased. → She is ...................................................................................................... 3. Being able to live in a clean environment is lucky. → It is ......................................................................................................... 4. They hear about the plan to collect the used boxes. They are surprised. → They are ................................................................................................... 5. Saving money from reused things made them very happy. → They are ...................................................................................................