Question

Look! There are so many mistakes in your composition. You ________ have fixed full attention on it.

A．can B．should

C．need D．might

 

Answer 1

B

【解析】选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。