单项选择题
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.
A．Unofficial strikes are more difficult to control. B．Unofficial strikes are against the British law. C．Unofficial strikes are unpredictable. D．Unofficial strikes are very common these days.