question_answer

Direction: In the following questions, a sentence/a part of the sentence is underlined. Below are given alternatives to the underlined part at [a], [b], [c] which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is [d].

You don't know the mechanism of computer properly isn't it?

A) haven't you                   

B) do you

C) don't you                      

D) No improvement