Simplify the following text for a Grade 4 native English-speaking person.
Original: The watching Bartolo is suspicious and demands to know what is in the piece of paper in Rosina 's hands , but she fools him by handing over her laundry list .
Simplified: Bartolo is watching and is suspicious . He wants to know what the letter is about , but Rosina fools him by giving him a list of things to be washed .