The boy went swimming in the deep lake， his mother’s fear for his safety.
A. but for
B. regardless of
C. apart from
D. instead of
网友回答
A. but for
(答案→)B. regardless of
C. apart from
D. instead of
解析：
考查介词短语辨析。but for要不是，如果没有； regardless of不顾，不管；apart from远离，除……之外，且不说；instead of代替，作为……的替换。根据句意应选B项。