Questions 1-4 refer to the following notice from a school principal.

Students, it is important that you keep the bathrooms clean. The school custodians do not want (1).... all of your messes. I think (2).... Please throw all paper into the trash cans. Lately, it has been found all over the bathroom floors. Also, please don't write on the mirrors or bathroom stalls. I know you enjoy (3).... your names, but it is difficult for the school custodians to erase them. I want you to take this notice seriously. I know you are good at (4).... responsibility for your actions, so please stop. Thank you.