, working there was a great experience which I will never forget.
(5) ______, working there was a great experience which I will never forget.
A. By contrast
B. However
C. Moreover
D. On the whole
A. By contrast: ngược lại
B. However: tuy nhiên
C. Moreover: hơn thế nữa
D. On the whole: nhìn chung
Chọn D