They never gave up hard to achieve their dream .A. workingB. workC. workedD. to work

问题补充：

They never gave up hard to achieve their dream .

A. working

B. work

C. worked

D. to work

答案：

(答案→)A. working

B. work

C. worked

D. to work

解析：考察give up用法。

give up doing sth 放弃正在做的事情（这件事就指代sth）

give up to do sth放弃正在做的事情，去做另一件事（这件事就指代sth)

根据题意，他们永不放弃努力工作来实现梦想。努力工作室正在做的事情，故选A。