单项选择题
A．you can pass food with your left hand B．you can pass food with the help of your left hand C．you' d better not pass food D．you' d better leave the table
A．they thought they came first B．they did not learn that they should C．they did not see the other people D．they wanted to take the seats on the bus
A．they did not queue for the bus B．they were foreigners C．the people were unfriendly D．there were not any reasons