问题
选择题
There's a rumor________that he is going to resign.
A．in the air
B．on the air
C．into thin air
D．in the open air
答案
答案：A
答案 A [考查介词短语辨析。句意：谣传他即将辞职。in the air在空中的；在传播中的； on the air在广播中；into the air完全看不见；in the open air 在户外。]