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

29. At college the work is _____ than the work we did at school , but it is much____. A. harder- more interesting B. hardest-most interestingC. harder-most interesting D. more hard- more interesting