单项选择题
A．Because Billy complained to her that his nose or ears hurt. B．Because Billy complained to her that his nose and ears hurt. C．Because Billy thought for a few seconds. D．Because Billy had trouble with his nose and ears.
A．To go out for exercise. B．To go out for shopping. C．To go to the library to borrow a book on William Carlos Williams. D．To help the woman with her oral presentation.
A．In an art gallery. B．In a chemical laboratory. C．In an optical shop. D．In a man’s wear store.