All _____ can be done has already been done.

Where did you put the broom,Tom? —–I _______it behind the door．But now it is gone．

What was the party like?—WonderfulIt’s years __________I enjoyed myself so much

sed that he ______ to the hospital atonce, but he insisted that he ______ quite well then.

Did you find the film interesting?—-________, I nearly fall asleep half way through it