填空The girl lives on the second floor.She is listening to the radio.
问题描述：
填空The girl lives on the second floor.She is listening to the radio.
The girl lives on the second floor.She is listening to the radio.
The girl ( ) ( ) ( ) ( ) the radio lives on the second floor.
答
The girl [who] [is][listening] [to] the radio lives on the second floor