IF I ... YOU WERE SICK. I WOULD HAVE CALLED SOONER.A. KNEW B. HAD...

52, - BAI TAP TRAC NGHIEM CAU DIEU KIEN
BAI TAP TRAC NGHIEM CAU DIEU KIEN
52, If I ... you were sick. I would have called sooner.A. knew B. had known C. know D. would have known