what will you be doing tomorrow evening?

问题描述:

what will you be doing tomorrow evening?
_________ the student's papers
A.correcting B.will be correcting C.to correct D.will correct
选哪个?考的是时态啊,还是不定式和分词?

A
应该是将来进行时,用动词进行时做宾语,回答的句子省略了主语和谓语,补完整之后如下:
I will be correcting the student's papers tomorrow evening.