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

答案：C
提示：

由后半句得知本结果是由过去开始的一个动作对现在的影响。另外，时间状语也提示应用现在完成时。