There are flowers in the square during National Day.A. million ofB. millions ofC. two mil

问题补充：

There are flowers in the square during National Day.

A. million of

B. millions of

C. two millions

D. two millions of

答案：

A. million of

(答案→)B. millions of

C. two millions

D. two millions of

解析：million“百万”的用法是：如果前面有具体的数字，就不能用复数，也不能加of；如果没有具体数字，就要用复数，并跟of。所以本题选B。