单选题 Speaker A: Look what Bruce gave me for my birthday--this beautiful scarf.
Speaker B: ______. He must have spent quite a bit of money on it. I didn't know you and Bruce were such close friends.

【正确答案】 D
【答案解析】[注释] D选项表示感叹，意思为“太棒了!”符合上下文的语境。