Question

He ________ late into the night，but now he goes to bed early due to health reasons.

A.usedtowork
B.usedtoworking
C.isusedtoworking
D.isusedtowork

Answer 1

【答案】：A
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。