A:Did chlidren clean the classrooms?
B:No,they didn't clean the classrooms.But they clean the labs.
A:Is the new bedroom comfortable?
B:No,it isn't comfortable.But the old bebroom is comfortable.
A:Was lilving room clean and tidy?
B:No,it wasn't clean and tidy.But the messy was clean and tidy.
A:Does Joan look beautiful?
B:No,she doesn't look beautiful.But Joan's sister looks beautiful.
A:Is the study larger than the kitchen?
B:No,it isn't larger than the kitchen.But the toliet larger than the kitchen.