问题补充：
— Is it OK if I take this seat?
—Sorry,.
A. here you are
B. take it
C. it is taken
D. never mind
答案：
A. here you are
B. take it
(答案→)C. it is taken
D. never mind
解析：情景对话题。A. here you are给你 B. take it买了 C. it is taken 有人占了 D. never mind 不要紧句意：我坐这个座位可以吗？对不起，有人占了。根据语境选C
