用括号内所给单词适当形式填空。 1. Have you _____ (do) anything to keep the water clean? 2. Project Hope has built schools and _____ (library). 3. Our city _____ _____ (change) a lot since 2001. 4. The girl left the classroom without _____ (say) anything. 5. All of us want to know how _____ (play) computer games. |