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

问题补充：

_ 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

答案：

A. Not only；but also

B. 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”