问题
选择题
You must change trains Zhengzhou Beijing.[ ]
A.for;for
B.at;to
C.to;into
D.at;for
答案
答案：D
搜题请搜索小程序“爱下问搜题”
You must change trains Zhengzhou Beijing.[ ]
A.for;for
B.at;to
C.to;into
D.at;for
答案：D