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

问题补充：

There are flowers in the square during the 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：英语中数词表示概数时，后面加s，和介词of搭配使用。用原形时表示具体数字和数词搭配使用。在国庆节期间，广场上有无数的鲜花。故选B。