单项选择题
A．There is a strike across the country. B．Many trains have been cancelled. C．A few trains have been cancelled. D．There is a strike in the North Region.
A．11 : 00. B．11: 20. C．11: 30. D．11: 50.
A．In the police department. B．In a drama society. C．In a university. D．In a primary school.