Помогите сделать номер 4

Is Mary listening to music now? Mary isn't listening to music now.

Is the cat running after the mouse? The cat isn't running after the mouse.

Are the boys making a plane? The boys aren't making a plane.

Are you building a nice house? You aren't building a nice house.

Am I reading a book now? I'm not reading a book now.

Mary isn't listening to music now. Is Mary listening to music now?  The Cat isn't Running after the mouse.  Is Cat Running after the mouse?  The Boys aren't making a plane.  Are Boys making a plane?  You aren't building a nice house. Are you building a nice house?  I'm not reading  book now.  Am I reading book now?