问题
选择题
_____ is known to everybody, the moon travels round the earth once every month. [ ]
A. It
B. As
C. That
D. What
答案
答案：B
搜题请搜索小程序“爱下问搜题”
_____ is known to everybody, the moon travels round the earth once every month. [ ]
A. It
B. As
C. That
D. What
答案：B