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

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