问题
选择题
His grandparents used to ________ a walk after dinner, but now they are used to ________ a walk after breakfast.
A．take, take
B．taking, taking
C．taking, take
D．take, taking
答案
答案：D
考察固定搭配，used to do sth 过去常常做某事 be used to doing sth 习惯于做某事，句意：他的祖父母过去常常晚饭后去散步，但是现在他们习惯早饭后散步。故选D