问题描述：
Sunday is the only day___i can go shopping A.when
Sunday is the only day___i can go shopping
A.when B.why
C.of which D.for which
选A还是C 为什么
Sunday is the only day___i can go shopping
A.when B.why
C.of which D.for which
选A还是C 为什么
问题解答：
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