13. They might have found a better hotel if they _________ a few more kilometers.

A. drove B. would drive C. were to drive D. had driven

【答案】D

【解析】考查虚拟语气。句意：如果他们多开几公里的话，他们也许会找到一个更好的旅馆。由“they might have found a better hotel”可知，该句是表示对过去的虚拟。if ____ a few more kilometers是条件句部分，表示对过去的虚拟，条件句部分要用过去完成时态，故D选项正确。

点睛：1. 表示对现在的虚拟：if条件句用一般过去时，主句用would/might/could/should+do;2. 表示对过去的虚拟：if条件句用过去完成时，主句用would/might/could/should+have done;3. 表示对将来的虚拟：if条件句用were to do/should do/一般过去时，主句用would/might/could/should+do。

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