THE WORLD __________A BETTER PLACE IF WE HAD KNOWN A HUNDRED YEARS...

8. - 25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN
25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN

8. The world __________a better place if we had known a hundred years ago what we know about the

earth’s environment.

A. should be

B. might be

C. was

D. will be