— What do you think of the young lady?— She is hard-working. She all her effort into her

问题补充：

— What do you think of the young lady?

— She is hard-working. She all her effort into her work before she got ill.

A. has put

B. put

C. had put

D. would put

答案：

A. has put

B. put

(答案→)C. had put

D. would put

解析：句意：你认为这个年轻的女人怎么样？——她工作很努力。在她生病以前，她把所有的经历都投入到了工作当中。结合语境可知本句描述的是一直持续到过去某时的动作，故用过去完成时态，选C。