问题补充：
My brother getting up early on weekdays.
A. used to
B. be used to
C. was used to
D. is used to
答案：
A. used to
B. be used to
C. was used to
(答案→)D. is used to
解析：句意：我的兄弟习惯了在工作日早起。Used to do sth过去常常做某事；be used to doing sth习惯于做某事。根据句意该用一般现在时态，所以选D。
