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

10. _________how the ancient Egyptian carried such heavy blocks of stone.A. People do not know B. People have not been knownC. It has not known D. It has not known