问题
选择题
— How unhappy your roommate looks!
— Yes, but he's 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's not willing to tell me what it is ____ is troubling him. [ ]
A. what
B. which
C. as
D. that
答案：D