一 ?一I’m twelveA. How are youB. How do you doC. How old are youD. Are you twelve

问题补充：

一 ?一I’m twelve．

A. How are you

B. How do you do

C. How old are you

D. Are you twelve

答案：

A. How are you

B. How do you do

(答案→)C. How old are you

D. Are you twelve

解析：本题主要考查情景交际，根据答语，说明问的是你多大了，故选C。