Find the omitted word in every line:
Wright and Fleming insisted that the surgeons aim be
not much to kill the germs as to help the
leucocytes to do natural germs killing work.
Wright and Fleming insisted that the surgeon's aim should be
not so much to kill the germs as to help the
leucocytes to do their natural germs killing work.
not so much to kill the germs as to help the
leucocytes to do their natural germs killing work.