Are these ___desks?这里填Daming and Lingling's吗

问题描述:

Are these ___desks?这里填Daming and Lingling's吗
Are these ___desks
1.Daming and Lingling's
2.Daming’S and Lingling's

2 ,因为第一个是说两者共有的,第二个是两者各有的,题目中desk用复数所以选2.