【单选题】

Mr. Jones had a few (41) holiday, so he said, "I’m going to the mountains (42) train." He put on his best clothes, took a small bag, went to the station and (43) the train. He had a very beautiful hat, and he often put his head (44) the window during the trip and looked at the mountains.But the wind blew his hat (45) .

Mr. Jones (46) took his old bag and threw it out of the window, too.
(47) people in the carriage laugheD、"Is your bag going to bring your hat back " they askeD、
"No," Mr. Jones answereD、"But there is (48) a name (49) an address in my hat, and there is a name and an address on the bag. Someone’s going to find both of them, and he is going to (50) me both the bag and the hat.\
A．of
B．right away
C．off