We have an Art Festival every year.(改为一般疑问句）
I like listening to music.(改为否定句）
The basketball is under the table.(就划线部分提问）划线部分是：under the table
请根据首字母提示乃句意补全单词.
There are twelve m______in a year.
December is the t______month of year.
How old are you?
I'm fifteen.I was born______1990.
A.in B.at C.on D.for