将下列句子改为祈使句,并将其改为祈使句的否定式.
You   should  clean  the  room .
 
  
   2.You are a good person.
 
 
   3.You can sit on this seat.
 
 
    4.You  do your homework carefully.
 
 
     5.You would like to read the  new  words  for  us.