单选题 I extend my sincere ______ to the family and friends of John Miller, who has suddenly left us at the age of 54.
【正确答案】 C
【答案解析】[解析] 54岁的约翰·米勒突然辞世，我对他的家人和朋友致以诚挚的哀悼。横线处填入的词被形容词“sincere”修饰，故C最合适。