He kept sending milk to the old couple for about 7 years now ___________having to look after his own child in the last few years.
A、in case of
B、in spite of
C、regardless of
D、on account of
【正确答案】：B
【题目解析】：in case of万一；如果发生；假设；in spite of尽管；regardless of不顾，不管；on account of由于；因为；为了…的缘故。句意：尽管在过去的几年里他不得不照顾自己的孩子，但他已经连续7年给这对老夫妇送牛奶了。
