Questions 19 to 22 are based on the conversation you have just heard.

A．Because they didn’t like Lincoln being, their president.
B．Because they wanted to set up their own government.
C．Because they disagreed with Lincoln about the abolishment of slavery.
D．Because they wanted to stage a war against Lincoln’s government.

A．They were able to fly it in the air.
B．They were able to stay up in the air for half an hour and more in the machine.
C．They were able to carry travelers.
D．They were able to fly in around Dayton.