【多选题】Mr. Brown was going away for a week. Before he left, he said to his son, "if anyone asks for me, you can tell him that your father has been out for doing something, and will be back in a week, then be...
A.
The piece of paper.
B.
Mr. Smith.
C.
The visitor.
D.
The boy.
E.
the words Mr. Smith wrote down on a piece of paper.