I am used to early and going to bed early. It’s a good habit.A. get upB. getting upC. to

问题补充：

I am used to early and going to bed early. It’s a good habit.

A. get up

B. getting up

C. to get up

D. got up

答案：

A. get up

(答案→)B. getting up

C. to get up

D. got up

解析：句意：我习惯于早起早睡，这是一个好习惯。be used to习惯于，后跟动名词，故选B。