Make these sentences more concise by eliminating wordy phrases, redundancy, and needless repetition.

a. I have admiration for Professor Jones.

b. Due to the fact that we made the lowest bid, we won the contract.

c. On previous occasions we have worked together.

d. We have completely eliminated the bugs from this program.

c. This report is the most informative report on the project.

f. This offer is the most attractive offer I've received