-Don’t put the waste on the ground.---Oh I’m very sorry. I the dustbin there. A. don’

问题补充：

---Don’t put the waste on the ground.

---Oh, I’m very sorry. I the dustbin there.

A. don’t see

B. isn’t seeing

C. didn’t see

D. haven’t seen

答案：

A. don’t see

B. isn’t seeing

(答案→)C. didn’t see

D. haven’t seen

解析：句意：不要把垃圾扔在地上。对不起。我没看到那的垃圾箱。应是说话之前没看到垃圾箱，所以用一般过去时。选C。