mothers can’t go to the meeting because they have gone to New York on business.A. Alice a

问题补充：

mothers can’t go to the meeting ,because they have gone to New York on business.

A. Alice and Lily’s

B. Alice’s and Lily’s

C. Alice’s and Lily

D. Alice and Lily

答案：

A. Alice and Lily’s

(答案→)B. Alice’s and Lily’s

C. Alice’s and Lily

D. Alice and Lily

解析：名词所有格中,如果两者共有后者加’s,两者各有各加’s,从mothers和they可以看出这是不是一个母亲，所以选B.