问题
选择题
_____ the 2000 Olympic Games will be held in Beijing is not known yet. [ ]
A. If
B. Whether
C. That
D. When
答案
答案：B
搜题请搜索小程序“爱下问搜题”
_____ the 2000 Olympic Games will be held in Beijing is not known yet. [ ]
A. If
B. Whether
C. That
D. When
答案：B