LiMingissocarefulthathealwayslooksoverhisexercisesto

問題詳情：

Li Ming is so careful that he always looks over his exercises to ______ there are no 

      mistakes.

      A: make sure   B: find out    C:think of      D:come true

【回答】

A

知識點：動詞和動詞短語

題型：選擇題