翻译中文！
1.How long __________________?(你来这儿?)
2.Someone_______________(打破了)the window.
3.I_________________(从未去过)the USA.
4.I haven't visited him_______(自从我来这儿).
5.He_________(入党十年了).
6.He ___________just____________(到达).
参考答案:have you been here
broke
have never gone to
since i got here
joined the Party for ten years
had arrive