单项选择题
W: Shelly must be over twenty now. M: Yes, when you left New York 10 years ago, Shelly was already 13.
A．Twenty-one. B．Thirteen. C．Thirty-three. D．Twenty-three.
A．He is interested in his work. B．He is proud of his work. C．He is tired of his work. D．He is keen on his work.
A．The white. B．The blue one. C．The black one. D．The green one.