用have/has been to和have/has gone to填空
1.---_____you ever _____ _____ Beijing?
---Yes,I went there last year.
2.Where can I find Jack?
---He ____ ____ ____ the post office.
3.---_____ you ever ____ ____ the United States?
---Yes,twice.
4.---Hello,this is Lily speaking.Can I speak to Mr Fox?
---Sorry.He ____ ____ ____ the Xuanwu Lake.
5.He ____ ____ ____Beijing.He will come back tomorrow.