There are many different ways of comparing the economy of one nation with those of another.

Câu hỏi :

Mark the letter A, B, C, or D to show the underlined part that needs correction in each of the following sentences.

A. There are 

B. of comparing

C. those 

D. another

* Đáp án

* Hướng dẫn giải

Đáp án : C

"those" -> "that" để tương đương với cụm "the economy of one nation" ở trước đó

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