Please answer this question 

6. Read the following conversation and choose the correct options to fill in the blanks in the passage that follows.

 

 Electrician: When did your electricity go?

Mohan: It is not working since evening.

Electrician: Sorry sir, in this case, I will have to check the fuse now.

The electrician asked Mohan (a) ______________ . Mohan replied (b)___________. The electrician apologetically said that in that case (c) ______________.

(a) (i) when his electricity went.

(ii) when his electricity had gone.

(iii) when your electricity had gone. 

(iv) when his electricity has gone.

 

 (b) (i) it is not working since evening.

(ii) they were not working since evening.

(iii) if it was not working since evening. 

(iv) that it was not working since evening.

 

(c) (i)he would have to check the fuse then.

(ii) he will have to check the fuse then. 

(iii) he would have to check the fuse now. 

(iv) he have to check the fuse then.