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

Câu hỏi :

Choose A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

A. have to make

B. changes in 

C. the technological institutions

D. to preserve

* Đáp án

C

* Hướng dẫn giải

Đáp án C

The technological institutions => technological institutions

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