I invited 20 people to my party, some of them are my former classmates.

Câu hỏi :

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.

A. invited

B. to

C. them

D. former

* Đáp án

C

* Hướng dẫn giải

Đáp án C

Them => whom

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