To save money .A. every means must be triedB. it’s important not to buy expensive thingsC.

问题补充：

To save money,.

A. every means must be tried

B. it’s important not to buy expensive things

C. not to waste money matters a lot

D. we decided to take his advice

答案：

A. every means must be tried

B. it’s important not to buy expensive things

C. not to waste money matters a lot

(答案→)D. we decided to take his advice

解析：考查句子结构，这里的不定式是目的状语，不定式的逻辑主语应该和句子的主语一致，这句话的主语一定是人，只有D项是正确的，句意：为了节约钱我们决定采纳他的建议。选D。