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

13. It is believed that a buried treasure was hidden in the tomb.A. They believed that a buried treasure was hidden in the tomb.B. A buried treasure is believed that was hidden in the tomb.C. A buried treasure is believed to hide in the tomb.D. A buried treasure is believed to have been hidden in the tomb.