问题
选择题
-How unhappy your roommate looks!
-Yes, but he is not willing to tell me what it is ________ is troubling him.[ ]
A．what
B．which
C．as
D．that
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-How unhappy your roommate looks!
-Yes, but he is not willing to tell me what it is ________ is troubling him.[ ]
A．what
B．which
C．as
D．that
答案：D
