A. IF WE POLLUTE THE WATER, WE HAVE NO FRESH WATER TO USE. B. IF W...

10. - TONG HOP 200 CAU TRAC NGHIEM TIENG ANH LOP 9
Lớp 9 TONG HOP 200 CAU TRAC NGHIEM TIENG ANH LOP 9

10. a. If we pollute the water, we have no fresh water to use.

b. If we pollute the water, we will have no fresh water to use.