I AM ______ TO HIM BECAUSE HE HAS HELPED ME A LOT.A. HELPFUL B. PL...

99. - 342 CAU TRAC NGHIEM ON THI TN HOT
342 CAU TRAC NGHIEM ON THI TN HOT
99. I am ______ to him because he has helped me a lot.A. helpful B. pleasing C. worried D. thankful