What are you going to do this afternoon?-- I am going to the cinema with some friends.

问题补充：

--What are you going to do this afternoon?

-- I am going to the cinema with some friends. The film quite early, so we to the bookstore after that.

A. finished; are going

B. finished; go

C. finishes; are going

D. finishes; go

答案：

A. finished; are going

B. finished; go

(答案→)C. finishes; are going

D. finishes; go

解析：考查时态。根据语境动作还没有发生，应用将来时态，finish 用一般现在时态表将来，be going to 也表示将来，所以选C 。