Question

-What do you usually do before going to bed？

--I ___________

A. used to write diaries B. am used to sleeping C. am used to reading

Answer

C

【解析】

句意：——睡觉前你通常做什么?——我习惯于读书。考查动词短语辨析。B项意思和问句矛盾，可排除。used to do过去常常做某事，be used to doing习惯于做某事，都是固定短语。usually通常，指多数情况；根据What do you usually do before going to bed可知A项不合句意，故选C。