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
网友回答
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。