听第一段对话，完成第11小题。
( )11.What’s John doing now ?
A. doing his homework B. playing the piano C. cooking in the kichen
听第二段对话，完成第12、13小题。
( )12.How old has the boy slept badly ?
A.for two days B.for a week C.for two weeks
( )13.What kind of pollutoin is there around the boy’s house ?
A.air pollutoin B.water pollution C.noise pollution
