Mother always tells me to believe in myself that nothing is too difficult to a willing h

问题补充：

Mother always tells me to believe in myself, that nothing is too difficult to a willing heart.

A. to say

B. saying

C. said

D. having said

答案：

A. to say

(答案→)B. saying

C. said

D. having said

解析：考查分词用法。Mother与say构成主动关系，所以使用现在分词表示主动和同时进行。句意：妈妈总是鼓励我相信自己，说有勇敢的心，什么都很容易。