单项选择题
A．Jefferson has traveled to many foreign countries. B．Washington and Adams were both presidents of United States. C．Jefferson did not know how to run for the presidency. D．Jefferson was not a scientist.
A．At a travel agency. B．At a bus stop. C．In a bank. D．In a bookstore.
A．Because the man was busy with his work. B．Because the man had to go to see his wife. C．Because the man was not in the town. D．Because the man did not want to go.