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。