All nations may have to make fundamental changes in their economic, political, and

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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

All nations may have to make (A) fundamental changes (B) in their economic, political, and the technological institutions (C) if they are to preserve (D) environment.

have to make

changes

the technological institutions

to preserve

Giải thích

Đáp án : C

Trước và sau”and” là liệt kê, nên các từ phải có dạng giống nhau-> bỏ mạo từ “the”.