#Person1#: You mustn't touch the wet paint, Bill.
#Person2#: I'm sorry. I won't do it again.
#Person1#: Try to be more careful in future.
#Person2#: I shall. I wasn't as careless as John Sampson. He walked across that wet cement over there.
#Person1#: The workmen oughtn't to leave it without a notice.
#Person2#: The headmaster asked them not to do so.
#Person1#: Then why isn't there a notice?
#Person2#: They went to their stores to get one. Here they come with it now!
#Person1#: But look at them! They've forgotten about the wet cement and they're walking across it to put up the notice!
notice