The salesman scolded the girl caughtand let her off.A. to have stolenB. to be stealing　C.

问题补充：

The salesman scolded the girl caughtand let her off.

A. to have stolen

B. to be stealing

C. to steal

D. stealing

答案：

A. to have stolen

B. to be stealing

C. to steal

(答案→)D. stealing

解析：本题考查的目标是看学生是否掌握catch sb. doing这一结构，caught在这里是过去分词做后置定语，相当于the girl who was caught stealing. 例：The farmer caught a man stealing his apples. 或A man was caught stealing apples. 那个农民发现一个人正在偷他的苹果。