问题
选择题
—Where can we go into the trade center?
—Haven't you seen the sign _____ over there?[ ]
A. 
B. 
C. 
D. 
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—Where can we go into the trade center?
—Haven't you seen the sign _____ over there?[ ]
A.
B.
C.
D.
答案：D