The five-year-old boy often says what children ________ will say.

1. A.
   twice his age
2. B.
   twice as old as his age
3. C.
   twice older than his age
4. D.
   twice age more than his

The five-year-old boy often says what children ________ will say.

[　　]

A．twice his age

B．twice as old as his age

C．twice older than his age

D．twice age more than his