We sometimes have to meet some difficulties but we should develop a good attitude life.A

问题补充：

We sometimes have to meet some difficulties, but we should develop a good attitude life.

A. in

B. on

C. at

D. to

答案：

A. in

B. on

C. at

(答案→)D. to

解析：句意：我们有时要遇到一些困难，但我们应养成一个好的生活态度。习惯上attitude后面用to。故选D。

考点: 考查介词的用法。