Question

Tina isn’t so quiet as she      . She is much more outgoing now.

1. A.
   did
2. B.
   used to
3. C.
   was used to
4. D.
   used to be

Answer 1

D
试题分析：句意：蒂娜不像她过去那样安静。她现在外向多了。联系前文可知as引导的从句中应为系表结构，选项AC语义不符，选项B缺少系动词。故选D。
考点：used to用法
点评：used to用法比较固定，be used to sth习惯于某事;used to do sth过去常常做某事.需要注意use还可以作为被动语态使用，sth be used to do sth某物被用来做某事。