Question

【题目】John's success has nothing to do with good luck. It is years of hard work _______has made him a great scientist today.

A. that

B. when

C. which

D. why

Answer 1

【答案】A

【解析】考查强调句的用法：It’s+强调部分+that…,这句话强调的是主语，years of hard work，句意是：约翰的成功和幸运无关，是多年的努力使他成为伟大的科学家。选A。