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

41. The World Health Organization (WHO) _______.A. works on international public health B. has no relation to the United NationsC. only takes care of Swiss people D. has no predecessor