--How does Jack usually go to school? ---He _____________ride a bike, but now he _____________there to lose weight.
A．used to, is used to walk
B．was used to, is used to walking
C．was used to, is used to walk
D．used to, is used to walking
答案：D
试题分析：句意：杰克通常如何去学校？他以前常常骑自行车，但是现在他为了减肥已经习惯了走着去那里。Used to do sth意为“过去常常做某事现在不做了”；be used to doing意为“习惯于做某事”；be used to do sth意为“被用来做某事”；结合句意，故选D。 考点：考查短语词义辨析。