I think people will go to Shanghai for the EXPO .A. million ofB. millions ofC. two mi

问题补充：

I think people will go to Shanghai for the EXPO .

A. million of

B. millions of

C. two millions of

D. two millions

答案：

A. million of

(答案→)B. millions of

C. two millions of

D. two millions

解析：million和具体数字连用时，后面不加of，且million不用复数；million不和具体数字连用时，要用复数，且后面要加of。所以选B。