问题

I ________ some clothes to charity because they are too small for me.
A:used to; is used to walk
B:was used to; is used to walking
C:was used to; is used to walk
D:used to; is used to walking;
B:was used to; is used to walking
C:was used to; is used to walk
D:used to; is used to walking;
正确答案是: