Lucy_____ Lily are at home,_____ their parents are not.
and; but
and; and
but; and
but; but
句意：露西和莉莉都在家，但他们的父母不在家。第一个分句用and来连接两个并列的主语；第二空表示转折，故用but，答案选A符合题目意思。
Mary isn't tidy,and her tapes are _____.
in her bag
everywhere
in the tape player
句意：玛丽不整洁，她的磁带到处都是。根据句中的 isn't tidy 可知磁带到处都是，故答案选选项B。