问题
选择题
I wonder why they’re so late. They ______ here an hour ago.
A．should be
B．might be
C．should have been
D．might have been
答案
答案：C
搜题请搜索小程序“爱下问搜题”
I wonder why they’re so late. They ______ here an hour ago.
A．should be
B．might be
C．should have been
D．might have been
答案：C