— ________ is your phone number?
— It's 232-4676.
What
Where
How
Why
询问某人的电话号码。
根据答语可知，问句问的是“你的电话号码是多少？”所缺的特殊疑问词是what，故选A。
— How old are you?
— __________
I'm 12 years old.
I'm fine.
You're welcome.
由问句可知是对年龄提问，答语应为年龄，故选A。