— Look, that's Tom-the lost boy!

— It's really     great comfort to see him safe again. He is sure to bring        comfort to his worried mother.[ ]

A. a; a            

B. the; the          

C. a; /            

D. the; /

在网络教室里各小组在制作电子作品，需要每组的组内成员能够互相访问组内成员的共享资源文件夹，我们一般可以通过（）来访问共享文件夹

A.我的电脑

B.网上邻居

C.我的文档

D.控制面板