下列选项中，关于社会工作领域的扩展的描述正确的是（）。

A.关注机构盈利

B.关注机构效益

C.从困难人群到有需要人群

D.关注机构员工个人发展

E.从关注社会问题到关注社会和谐发展

—Can you tell me ________?

— With Lucy’s help.

A．when you did it so well

B．when did you do it so well

C．how you did it so well

D．how did you do it so well