5、hatD./12. I, _________ your good friend, will try my best to help you out. A. who is B. who am C. that is D. what is 13.Thefirstthing________weshoulddoistowatertheflowersinfrontoftheroom.A.whichB.asC.whatD.that14.Anygirls________knewhimwereteachers.A.whereB.thatC.theyD.who