单选题 The market research report contained enticing forecasts for stock markets ______ proved completely wrong.
  • (A) in which
  • (B) of which
  • (C) that
  • (D) what


【正确答案】 C
【答案解析】空格后的proved是从句中的谓语动词。空格填入的单词必须同时做连词和prove的主语。A选项和B选项都是“介词+名词”，不符合条件。因为前面有先行词，所以what也不行。