As a matter of fact, children with parents whose guidance is firm, consistent,and rational are inclined _____ high level of self-confidence.
句意： 事实上， 受到父母严格、 一贯而且合理的教导的那些孩子，往往自信心很强。 be inclined意为"常常， 往往"， 后接动词不定式， 表示某种倾向。