用have gone to / have been to / have been in / went to 填空。
1. —Hi, I'm looking for you everywhere. 
    —Oh, I have _____ to the library.
2. My aunt has never _____ to Russia, so she doesn't know where Russia is.
3. The Blacks aren't in Beijing, they have _____ to Shenzhen together.
4. He doesn't want to see you, so he has _____ to another city.
5. Oh, you are here, they are looking for you ,where have you _____?
6. —Where have you _____ these days?
    —I have _____ to Chifeng to visit a friend
7. He has just _____ to Chongqing, I'm afraid you can't see him.
8. He has _____ to many cities in China ,but he has never _____ abroad.
9. My father has never _____ to the park with me before.
10. Daming and Linda have _____ to the garden, I want to go ,too.