单项选择题
A．a library. B．a bookstore. C．the classroom. D．a department store.
A．attacking the patrol boat. B．smuggling in refugees. C．causing the accident. D．injuring refugees.
A．Bad living conditions are due to the poor city. B．Bad planning is responsible for poor living conditions. C．Living conditions are bad because the city is too big. D．Small cities have better living conditions than large ones.