On National Day, ________ people take part in all kinds of celebration.

1. A.
   hundreds of millions of
2. B.
   millions of hundreds of
3. C.
   hundreds millions of
4. D.
   millions hundreds of

On National Day, ________ people take part in all kinds of celebration.

[　　]

A．hundreds of millions of

B．millions of hundreds of

C．hundreds millions of

D．millions hundreds of