The boy went swimming in the deep lake， his mother's fear for his safety．
A. but for
B. apart from
C. regardless of
D. instead of
网友回答
A. but for
B. apart from
(答案→)C. regardless of
D. instead of
解析：短语意义辨析。A要不是…；B除…之外；C不管，不顾；D代替，而不是；句意：不管妈妈担心他的安全，这个男孩还是到深的湖泊里去游泳了。根据句意说明C正确。