— Mingzhou Bridge was open to traffic in May.— ! The traffic in Ningbo is becoming better.

问题补充：

— Mingzhou Bridge was open to traffic in May.

— ! The traffic in Ningbo is becoming better.

A. Good luck

B. Wonderful

C. Good idea

D. Best wishes

答案：

A. Good luck

(答案→)B. Wonderful

C. Good idea

D. Best wishes

解析：Good luck祝你好运；Wonderful好极了；Good idea好主意；Best wishes送上我最好的祝愿。句意：明洲大桥五月通车。联系下文，宁波的交通变得更好了。结合语境可知选B。