No one but the seven-year-old boy saw the accident.Đoạn văn37/40No one but the seven-year-old boy saw the accident. Only the seven-year-old boy saw the accident.No one at all saw the seven-year-old boy's accident. The seven-year-old boy saw no one in the accident. No one in the accident saw the seven-year-old boy.Giải thíchĐáp án A