Hãy nối mỗi phím ở cột A với một chức năng tương ứng ở cột B.
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1.
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a. Xoá kí tự bên phải con trỏ soạn thảo
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2. 
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b. Xuống dòng và chuyển sang đoạn văn bản mới
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3. 
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c. Xoá kí tự bên trái con trỏ soạn thảo
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4. 
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d. Nhấn giữ để gõ chữ hoa
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