We should know that we can only reach the top if we are ready to and learn from failure.A

问题补充：

We should know that we can only reach the top if we are ready to and learn from failure.

A. deal with

B. rely on

C. watch over

D. sort out

答案：

(答案→)A. deal with

B. rely on

C. watch over

D. sort out

解析：句意：我们应该知道如果我们准备好应付失败，并且从失败中吸取教训，我们一定会成功的。deal with应付；rely on依赖；watch over监视；sort out分类，选A。