问题补充：
---Anna, you look so tired and wet all over!
---Well, you know, all morning I my books to my new office on the third floor.
A. am moving
B. have moved
C. had moved
D. have been moving
答案：
A. am moving
B. have moved
C. had moved
(答案→)D. have been moving
解析：句意：安娜，你开起来很累全身都湿透了！你知道吗？整个早上我都在将我的书搬到
我三楼的新办公室。现在完成进行时表示动作一直进行，或是刚刚结束，还有可能持续的进行下
去，故选D
