单选题 —Would you like to come to dinner tonight?
—I'd like to, ______I'm too busy.

【正确答案】 D
【答案解析】[解题指要] 从答语判断应该为不能参加晚宴,I'd like to, but I…这一句式常表示有礼貌地拒绝邀请,并在but后给出原因。