Explanation

We are not in a position to do all we promised to do.

ہم اس پوزیشن میں نہیں ہیں کہ وہ سب کچھ کر سکیں جس کا ہم نے وعدہ کیا تھا۔

In this sentence, "all" is the most appropriate option because it refers to the entirety of what was promised.

It is concise and grammatically correct in this context.