问题

I don’t think Lily can sing _______ Lucy.—I disagree. I think Lily can sing ______ Lucy.
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: