---Why do you pay a visit to your parents ?
--- they live in a remote village far from here.
A. occasionally; Because
B. every now and then; Since
C. from time to time; Now that
D. once in a while; As
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(答案→)A. occasionally; Because
B. every now and then; Since
C. from time to time; Now that
D. once in a while; As
解析：考察副词和连词辨析occasionally偶然地；every now and then/ from time to time时而不时；once in a while偶尔；because因为；since因为，自从；now that既然；as随着；句意：—你为什么只是偶尔采取看望你的父母亲？—因为他们住在远离这里的一个偏远的小山村。故A正确。