What was Liam doing? – He studied for his final exam.

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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.

What was Liam doing? – He studied for his final exam.

was

doing

studied

his

Giải thích

Đáp án đúng: C

Câu hỏi dùng thì QKTD nên câu trả lời cũng phải dùng thì QKTD.

Sửa: studied → was studying

Dịch: Liam đang làm gì thế? – Anh ấy đang ôn tập cho kì thi cuối kì.