填空题 Most students (take) 1 sixty credits by the time they graduate.
  • 1、
【正确答案】 1、will have taken    
【答案解析】[测试重点] 将来完成时 [试题精解] by the time通常与完成时连用,由于学生现在还未毕业,所以要用将来完成时,要表示将来某一时刻之前业已完成的动作要用will/shall+have+过去分词。又如:We will have finished this book by the end of this week.(这周末之前我们要学完这本书。)