因此选B。
【2011 兰州】33. — Hello! Can I speak to the headmaster, please?
—
A. Who are you, please? B. Of course, you can.
C. Who is it, please? D. Sorry, you can't.
答案：C
【解析】情景对话。此对话为电话用语，在不明白对方是谁的情况下可用it，因此选C。
【2011 兰州】34. In many places in China, the old over 90 not only by their family but also by the government.
A. is taking good care B. are taken good care of
C. is taking good care of D. are taken good care
答案：B
【解析】被动语态的用法。句意“在中国的许多地方，超过90岁的人不仅被家庭好好照顾着，而且也被政府照顾着”。the old指