He ________ late into the night，but now he goes to bed early due to health reasons.
- A.used to work
- B.used to working
- C.is used to working
- D.is used to work
正确答案及解析
正确答案
A
解析
句意：以前他经常加班到深夜，但现在因为身体原因，他早早就睡了。used to do sth.意为“过去常常做某事”，be used to doing sth.意为“习惯做某事”，故选A。
