Question

–Why, David, you look so tired!
–Well, I ______ a report for the whole day and I must finish it tomorrow.

A．was writing	B．will be writing
C．have written	D．have been writing

Answer 1

D

考察时态。根据句中时间状语for the whole day可知与现在完成进行时连用。结合句意：我整天都在写报告。我每天一定会完成。