If we had taken such effective measures
题型:选择题
问题:
If we had taken such effective measures much earlier, the river _____ so seriously now. [ ]
A. is not polluted
B. would not be polluted
C. had not been polluted
D. would not have been polluted
If we had taken such effective measures much earlier, the river _____ so seriously now. [ ]
A. is not polluted
B. would not be polluted
C. had not been polluted
D. would not have been polluted