Tommy was planning to buy a car the next week,______ he ______ enough for a used

题型：不详难度：来源：

Tommy was planning to buy a car the next week,______ he ______ enough for a used one．

A．by that time; had saved	B．by which time; had saved
C．by that time; saved	D．by which time; has saved

答案

B

解析

试题分析：考查从句和时态，从句he …enough for a used one缺少成份，所以选which，by…的时间状语，时态是完成时，有前面的句子是过去式，所以用过去完成时，所以是had saved，句子意思“汤米打算下周买一辆车，到那个时候他已经节省足够的钱买个二手车”，所以选B
点评：做从句题时，首先看从句是否缺少成份，如果缺少成份就选择关系代词，关系代词不仅起引导作用而且做成份；如果不缺少成份，就选择关系副词，关系副词不做成份，只起引导作用；做时态题时，首先看时间状语，由时间状语确定时态，如果没有时间状语。从句子隐含的意思来判断时态。