they watch TV on Sunday and on Saturday.(改为否定句）

题目

they watch TV on Sunday and on Saturday.(改为否定句）
the library is behind the dining hall .(改为同义句）
there is one library in our city.(划线部分提问）（“one”划线）
there are no pictures on the wall.(改为同义句）

答案

They don't watch TV on Sunday or on Saturday.
the dining hall is in front of the library .
How many libraries are there in your city?
there aren't any pictures on the wall.