问题
选择题
My cousin used to ________ online too late, but now she is used to ________ to bed early.
A．chat; go
B．chatting; go
C．chatting; going
D．chat; going
答案
答案：D
题目分析：句意：我的表妹以前上网到很晚，但是现在她习惯于早睡了。be used to doing sth 习惯于做……，used to do sth,过去常常做某事。根据结构和句意，故选D。