Lily and Lucy are (my friends).(对括号部分提问)____ ____Lily and Lucy?

问题描述:

Lily and Lucy are (my friends).(对括号部分提问)____ ____Lily and Lucy?

__Who__ __are_ Lily and Lucy?
Lily 和Lucy是谁?
回答:Lily 和Lucy是我的朋友.