单选题 They worked ______ day and ______ night and were paid by ______ hour.
  • [A] /; /; /
  • [B] the; /; the
  • [C] the; the; /
  • [D] /; /; the


【正确答案】 D
【答案解析】[考点] 冠词的用法
[解析] 本题中出现了两个习语，一为day and night“日日夜夜，不分昼夜”，二为pay by the hour“按小时计算”。对付这类题仍应平时多加积累，别无捷径。