Tom was so careless that he often .the exam

题目

Tom was so careless that he often .the exam
A.make mistake of B.makes mistakes inC.made mistakes in D.made mistakes of 我知道答案是C但不是有often了吗为什么还用 made?

答案

主句时态是 一般过去时,主从句一般在时态上是一致的.句子是在叙述汤姆过去的情况.整句意思是：汤姆过去很粗心,考试中经常出错.