_ Lily _ Lucy is going with you because one of them must slay at home.A. Not only；but also

_ Lily _ Lucy is going with you because one of them must slay at home.
A. Not only；but also
B. Neither; nor
C. Both;and
D. Either;or

A. Not only；but alsoB. Neither; nor C. Both;and (答案→)D. Either;or解析：连词的考察Not only；but also “不但……而且”； Neither; nor “既不……也不” Both;and “……和……”；Either;or“或者……或者”，由下文“他们中的一个必须呆在家里”，可知“或者露西或者莉莉与你一起去”

就是这个解释