There are things Mr Hill has already done, but there are things he hasn't done yet.

1) What he has already done:

clean the window	He has already cleaned the window.
do the washing up	.
vacuum the floor	.
do the ironing	.

2) What he has not done yet:

sweep the stairs	He hasn't swept the stairs yet.
clean the stove	.
empty the rubbish bin	.
clear the table	.