Improve the bracketed part of the sentence.He thanked me for what I(have done) for his wife.1). had done2). had been done3). have been done4). No improvement

Improve the bracketed part of the sentence.He thanked me for what I(ha

1.	Improve the bracketed part of the sentence.He thanked me for what I(have done) for his wife.1). had done2). had been done3). have been done4). No improvement
Answer» had been DONE : OPTION 2 is the CORRECT ANSWER