单选题 Unfortunately, there were ______ more available seats on the flight.
A. one B. no
C. some D. every

【正确答案】 B
【答案解析】[解析] 后面是复数名词seats,因此B项no和C项some都可能是正确答案,但是通过unfortunately(遗憾地,不幸地)这个副词,可以推测出是否定的意思。
词汇:available可利用的