Tom was thinking about how to explain to the teacher why he was late for class when a goo

问题补充：

Tom was thinking about how to explain to the teacher why he was late for class, when a good idea him.

A. happened

B. brought

C. occurred

D. struck

答案：

A. happened

B. brought

C. occurred

(答案→)D. struck

解析：考查固定句式。固定句式：sth occur to sb=sth strike sb某人突然想起某事；句意：Tom正在思考如何向老师解释他迟到的原因，在这时他突然想起了一个好的主意。故D正确。