EXERCISE 3I. CHỌN TỪ/ CỤM TỪ THÍCH HỢP (ỨNG VỚI A, B, C, D) ĐỂ HỊAN TH...

BAI TAP ON THI TN VA DAP AN

41. - Mary will help the teacher.  “___________”.A. Are you certain? B. Do you understand? C. Can you hear? D. What did you know?