Their belief is that this is the only way for many of these nationstheir painful pasts.A.

问题补充：

Their belief is that this is the only way for many of these nationstheir painful pasts.

A. escaping

B. to escape

C. escaped

D. escape

答案：

A. escaping

(答案→)B. to escape

C. escaped

D. escape

解析：本题考查非谓语动词。句中the only way，后用不定式to，故选B。句意：对这些许多国家，他们的信念是忘记苦难的过去的唯一方法。