On her way home Lucy saw a thief in a shop. She stopped 110 at once.A. steal; callB. to

问题补充：

On her way home, Lucy saw a thief in a shop. She stopped 110 at once.

A. steal; call

B. to steal; call

C. stealing; to call

D. stealing; calling

答案：

A. steal; call

B. to steal; call

(答案→)C. stealing; to call

D. stealing; calling

解析：句意：在她回家的路上，露西看到一个贼正在一个商店偷东西。她立即停下来打110.现在分词作宾语补足语表示正在进行的伴随性动作，和被修饰词是主谓关系。Stop后接不定式作宾语表示停下来去做某事，接动名词表示停止真正做的事情。结合语境可知选C。