—Each year,_     _ fishes are killed by the polluted water and many people are m

题型：同步题难度：来源：

—Each year,_     _ fishes are killed by the polluted water and many people are made sick by the polluted air.  
—We should do something to stop it!    [     ]
A. million of            
B. millions of    
C. two millions          
D. two millions of

答案

B