问题
选择题
Inside the White House, there is a room called the Oval Office. That's ________ President Obama works.
A．why
B．where
C．what
D．how
答案
答案：B
答案：B。句意：在白宫里有一个被称为“the Oval Office”的房间。那是奥巴马总统工作的地方。考查表语从句的引导词。从句中缺少地点状语，故用where引导。