I’m used to ______ early in winter morninga、get upb、getting upc、gotten upd、 be getting up

I’m used to ______ early in winter morninga、get upb、getting upc、gotten upd、 be getting up
I’m used to ______ early in winter morning
a、get up
b、getting up
c、gotten up
d、 be getting up

I’m used to ______ early in winter morninga、get upb、getting upc、gotten upd、 be getting up
be used to doing 习惯于做某事
我习惯早起

A
used to do sth.

B be used to doing

b
be used to doing sth. 习惯于做某事
我冬天的早晨习惯早起