IT’S TOO BAD HELEN ISN’T HERE. IF SHE_____ HERE, SHE_____ WHAT TO...

34) - BT TRAC NGHIEM VE CAU DIEU KIEN
BT TRAC NGHIEM VE CAU DIEU KIEN
34) It’s too bad Helen isn’t here. If she_____ here, she_____ what to do.A. is / will know B. was / knows C. were / would know D. are / would have known