posted by Brenn .
I need to write a letter.
1. "I borrowed Mr. ABC from your division for the project..."
2. "He contributed a lot to the project."
How can I make the above sentences more formal?
1. What word can I replace "borrowed" with? How can I say the same thing in a more formal way?
2. "a lot" seems vague, what word should i use?
1. Mr. ABC from your division participated in our project.
2. He made substantial contributions to the project.