Having finished his term paper before the deadline, it was delivered to the professor

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

Having finished (A) his term paper before the (B) deadline, it was delivered (C) to the professor before (D) the class.

finished

before the

it was delivered

before

Giải thích

Đáp án : C

It was delivered -> he delivered, vì chủ ngữ ở đây là “he” để thực hiện hành động “finish his term paper”