Put the verbs in brackets into the present perfect

6.India (be) ______________ an independent country since 1947
 7. I (know) _______________ George for a long time.
8. So far she (appear) _______________ in 3 action films. 9. (you, ever, be) _______________ to London before?
10. How long _______________ Phong (know) _______________ you
thì hiện tại hoàn thành