问题
填空题
用所给单词的适当形式填空。
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.
答案
1. done
2. libraries
3. has changed
4. saying
5. to play