WE ... FRIENDS FOUR 4 YEARS.A. HAVE BEEN B. WERE C. HAS BEEN D. WAS

4. - DE VA DAP AN KHAO SAT DAU NAM TIENG ANH 7 8 9
Tiếng Anh DE VA DAP AN KHAO SAT DAU NAM TIENG ANH 7 8 9
4. We ... friends four 4 years.A. have been B. were C. has been D. was