Question

 Danny           hard for long to realize his dream and now he is popular.

A. works                 B. is working                C. has worked                            D. worked

Answer 1

 C 句意：丹尼為了實(shí)現(xiàn)他的夢想已努力工作了很久，現(xiàn)在他終于走紅了。C項(xiàng)強(qiáng)調(diào)發(fā)生在過去的動(dòng)作對(duì)現(xiàn)在造成的影響；A項(xiàng)強(qiáng)調(diào)現(xiàn)在習(xí)慣性的或經(jīng)常發(fā)生的動(dòng)作，與過去無關(guān)；B項(xiàng)表示現(xiàn)在正在 進(jìn)行或近段時(shí)期內(nèi)正在進(jìn)行的動(dòng)作，不與for long時(shí)間狀語連用。D項(xiàng)表示過去經(jīng)常發(fā)生的動(dòng)作，與現(xiàn)在無關(guān)。故選C。