500 bài viết lại câu ôn thi chuyên Tiếng Anh có đáp án cực hay (Phần 1)

He began by giving us a summary of his progress so far. (OUTSET)

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He began by giving us a summary of his progress so far. (OUTSET)

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Giải thích

→At the outset, he gave us a summary of his progress so far.