Article issues - use of "the"

[FirstScript]

1.______ anonymous caller helped ______ local police crack ______ difficult case that had remained unsolved for years.

Which article correctly fill these blanks ? I am trying to set an article question, but am confused as to what the correct answer is.

 

[Offroad]

An/The anonymous caller helped a/the local police crack on a difficult case that had remained unsolved for years.

I am not a teacher. Could you check the sentence for us?

Thanks

 

[malik naseem abbas]

1.____the__ anonymous caller helped ___the ___ local police crack __on a____ difficult case that had remained unsolved for years.

Which article correctly fill these blanks ? I am trying to set an article question, but am confused as to what the correct answer is.

i think the following should be the possible reply of the sentence:
An anonymous caller helped the local police crack on a difficult case that had remained unsolved for years.

 

[FirstScript]

Thanks for the replies.

Typo in the earlier post - *articles


The first and last bank are "An" and "a" respectively.

However I am a little confused about the use of "the" in the middle blank. I would like a clarification as to when the article should be used, and when not.

 

[Anglika]

1.______ anonymous caller helped ______ local police crack ______ difficult case that had remained unsolved for years.

Which article correctly fill these blanks ? I am trying to set an article question, but am confused as to what the correct answer is.

An / the / a

"the local police" = specific [there is not likely to be more than one police group in a district]

What will you do if your answers include "the" as the third article? It is a possible use.

 

[FirstScript]

An / the / a

"the local police" = specific [there is not likely to be more than one police group in a district]

What will you do if your answers include "the" as the third article? It is a possible use.

Thanks !

The third blank has "the" as an option, but not in combination with the correct options for the other blanks.