You are well prepared for the job interview there’s no need for you to get so nervous.A.

问题补充：

You are well prepared for the job interview, there’s no need for you to get so nervous.

A. or

B. while

C. but

D. so

答案：

A. or

B. while

C. but

(答案→)D. so

解析：将前后两分句译成汉语：你对求职面试做好准备，——你没有必要这么紧张。可知前后两分句呈因果关系，故应选D。 A. or 或者 B.while 而，却 C.but 但是 D. so 因此