He found it difficult to explain some of his ____(信念) to the boy.
问题描述：
He found it difficult to explain some of his ____(信念) to the boy.
答
信念的英语是 belief,faith,conviction
faith 也有信仰之意,
而 conviction 既有有坚信之意,也有定罪之意,因此
从语境来看用 belief 最适当,但要用复数 beliefs .
He found it difficult to explain some of his (beliefs) to the boy.