【题目】— Could you meet me at the airport?
— I'd like to，but I'm afraid I ______ a very important meeting when you return.
A. am attending
B. was attending
C. will be attending
D. will have attended
在线课程【答案】C
【解析】考查动词的时态。句意：你能来机场接我吗？我想去，但恐怕当你回来时我正在开会。根据语境指的是when you return.，正在做某事，故用将来进行时，所以选C项。