— I think we should phone Susan and apologize to her.— It was our faultA. No way.B. No wo

问题补充：

— I think we should phone Susan and apologize to her.

— It was our fault

A. No way.

B. No wonder.

C. Why not?

D. Not at all.

答案：

A. No way.

B. No wonder.

(答案→)C. Why not?

D. Not at all.

解析：考察交际用语。A不可能；B难怪C为什么不？D一点也不；句意：—我认为我们应该打电话给Susan向他道歉。—为什么不呢？这是我们的过错。根据句意说明后者同意前者的建议，故C正确。