A：不要again是正确的，意思是我确信我没有将咖啡倒在你的毯子上,,加上again,你试试，翻译不顺畅多了B/D属于不理解assure的词性和意思，它是及物动词，向…保证；使…确信；使…放心eg: If you assure someone that something is true or will happen, you tell them that it is definitely true or will definitely happen, often in order to make them less worried....
