He is taller than he ______.
A. used B. used to be
C. used to D. used to do
He is taller than he ______.
A. used B. used to be
C. used to D. used to do
B
选B。学生在做该题时，极易选择C，原因是为了避免重复已经出现的动词，以不定式to来代替整个不定式结构，而正确的答案是B。如果在省略的动词不定式结构中含有be, have或have been，通常保留be, have been。又如：
—Are you o holidays? —你在度假吗？
—No, but I’d like to be. —不是，但我倒愿意。