It was the principles I learned from my reading enabled me to get bigger and better jobs.

问题补充：

It was the principles I learned from my reading enabled me to get bigger and better jobs.

A. that

B. which

C. what

D. who

答案：

(答案→)A. that

B. which

C. what

D. who

解析：可联系答.案.网客服索取。