The phrase “go ahead” means _______ .
A.cleared for take–off
B.proceed to the front of the landing pattern
C.you may pass the aircraft ahead of you
D.proceed with your message
正确答案是D
The phrase “go ahead” means _______ .
A.cleared for take–off
B.proceed to the front of the landing pattern
C.you may pass the aircraft ahead of you
D.proceed with your message
正确答案是D