【题目】—You look pretty tired today!
—I an environmental report over the last few days, which should be submitted to the boss tomorrow.
A. wrote B. was writing
C. had written D. have been writing
在线课程【答案】D
【解析】考查动词时态。句意：--你今天看起来很累！-- 在过去的几天里我一直在写一个环境报告，这个报告明天应要提交给老板。表示从几天前开始一直进行持续到现在的动作，用现在完成进行时，故选D.