Who was Mark Twain?

- Hướng dẫn giải

Phương pháp giải:

Giải chi tiết:

Đáp án

-           He was a famous American writer.

-           Mark Twain was a famous American writer.

-           He was an American writer.

            Câu đầu tiên trong bài có nói: Mark Twain was a famous American write