题目内容
He ________late watching TV when he was a student, but now he ________to bed early.
A．was used to staying up; is used to go
B．used to staying up; used to go
C．used to stay up; is used to going
D．used to stay up; used to go
C
【解析】C [他上学时常常熬夜看电视，但现在习惯了早睡，因此选C。]
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