Логика такая: нужно сопоставить информацию из двух текстов и составить предложения по образцу.
Mum didn't wash the dishes last Monday. She washed the dishes last Friday.
Mum didn't clean the windows last Monday. She cleaned the windows last Friday.
Mum didn't water the apple trees last Monday. She watered the apple trees last Friday.
Mum didn't cook meat last Monday. She cooked meat last Friday.
Mum didn't bake a lemon cake last Monday. She baked a lemon cake last Friday.