I lived with my brother this winter and didn’t have to pay rent. So I ________ save most of my salary.

A．could

B．would

C．was able to

D．should

局里有个出国深造的机会，深造回来就有升迁的机会。你和另一位同事无论在学历、背景、能力等等方面都不相伯仲，你会怎么突出自己而争取到这个机会？