You had your house repaired last month, ____?
A. didn’t you
B. hadn’t you

Note: What do you think is the correct answer and why? If there is a problem with the question would you please point it out? thanks

Question

You had your house repaired last month, ____?
A.	didn’t you
B.	hadn’t you

Note: What do you think is the correct answer and why? If there is a problem with the question would you please point it out? thanks

Answer

B is correct, because you have to use the same tense in this sentence. The tense used is Past Perfect, which consists of a person + had + verb Past Participle. 
Other example:
She had her car fix this month, hadn't she?

Answer

B is probably technically correct, but you would most commonly hear A. Not all English speakers know the correct grammar!

Answer

Thanks Peachey for pointing it out!! :)

Answer

The correct answer is actually A. This is not a perfect tense, but a causative verb.  Objects don't fit in between the perfect tense pattern.