Question

— 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

Answer 1

C

解析試題分析：句意：你認為這個年輕的女人怎么樣？——她工作很努力。在她生病以前，她把所有的經歷都投入到了工作當中。結合語境可知本句描述的是一直持續到過去某時的動作，故用過去完成時態，選C。
考點：考查動詞的時態。