问题
选择题
—It’s reported that the new underground line has been completed．
—Yes but it hasn’t been made clear _____it’s to be opened to traffic．
A．that
B．who
C．what
D．when
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—It’s reported that the new underground line has been completed．
—Yes but it hasn’t been made clear _____it’s to be opened to traffic．
A．that
B．who
C．what
D．when
答案：D