---Alice why didn’t you come the other day ? .---I but I had an unexpected visitor. A. h

问题补充：

---Alice, why didn’t you come the other day ? .

---I, but I had an unexpected visitor.

A. had

B. would

C. was going

D. did

答案：

A. had

B. would

(答案→)C. was going

D. did

解析：句意：爱丽丝，为什么前几天不来我这里。我打算来的，但是我突然有一个不速之客。was going 表示过去打算做某事，故选C