What happens if a caller presses 1?A.He can leave a message.B.He can get a monthly schedul

外语类 海船船员 已帮助 人

What happens if a caller presses 1?

A.He can leave a message.

B.He can get a monthly schedule.

C.He can find out about tickets.

D.He can get on the mailing list.

热搜:a是b的充分条件,b是a的必要条件吗