-What’s the matter with you, Tom? - the ladder, one of arms has been broken. A.

—What’s the matter with you, Tom?

—______ the ladder, one of arms has been broken.

A. Climbing                           B. While climbing

C. To climb                            D. While I was climbing

试题答案

D

解析:

考查非谓语动词用法。因为one of my arms不能作climb的逻辑主语，故不选A。爬梯子动作的发出者只能是人，由此推断正确答案为D。