I make most of my money by writing books but I do magazines sometimes.A. refer toB. see t

问题补充：

I make most of my money by writing books but I do magazines sometimes.

A. refer to

B. see to

C. contribute to

D. add to

答案：

A. refer to

B. see to

(答案→)C. contribute to

D. add to

解析：考查词组：A. refer to所指，谈及B. see to负责，处理C. contribute to导致，投稿，贡献D. add to增加，句意：我的钱大部分是写书挣的，但我确实有时向报纸投稿。选C。