WE ... FRIENDS SINCE WE ... AT COLLEGE TOGETHER.A. HAVE BEEN / WERE...

4. - THAM KHẢO ANH 10 HK I 8
THAM KHẢO ANH 10 HK I 8

4. We ... friends since we ... at college together.

A. have been / were

B. were / have been

C. had been/have been

D. were / were