Students should study hard to make their dreams .A. come outB. come upC. come trueD. com

问题补充：

Students should study hard to make their dreams .

A. come out

B. come up

C. come true

D. come on

答案：

A. come out

B. come up

(答案→)C. come true

D. come on

解析：句意：学生们应该努力学习来让他们的梦想成真。come out意为“出现，出版，结果是”，come up意为“发芽，被提出”，come true意为“实现，成真”，come on意为“快点，加油，得了吧”；根据下文故选C。