—Will you go fishing with me this weekend? —Sorry, _______. I'm going to see the dentist.
【正确答案】 B
【答案解析】解析:用will向第二人称提问的疑问句,表达一种意愿和请求,意为“请你……,好吗?”,其肯定回答可用“Sure!”“Yes,of course.…”“Certainly!”等,否定回答通常是“Sorry,I can't.”“No,I'm afraid I can't.”“I’m sorry,but...”等。答案为B。