问题
选择题
Mike take a bus to the office, but now he walking there.
A．is used to, is used to
B．used to, used to
C．is used to, used to
D．used to, is used to
答案
答案：D
题目分析：句意：Mike过去乘公共汽车去办公室，但是现在他习惯走着去上班。考查固定短语：used to do sth.过去常常做某事（强调动作在过去发生）；be used to doing sth. 习惯于做某事。故选D。
