问题补充:
(·哈尔滨四校高三统一检测)Look! There are so many mistakes in your composition. You have fixed full attention on it.
A. can
B. should
C. need
D. might
答案:
A. can
(答案→)B. should
C. need
D. might
解析:B考查情态动词。句意:看!你的作文里有那么多的错误。你本应该把所有的注意力都集中在它上面的。表示“本应该做但实际上没有做”应该用should have done结构,故选B项。