Use the following words in sentences?

Question

Expedient, alacrity, conscience, pertinent

Answer 1

Due to his lack of performance, it was expedient that the employee had to be fired.

He denied any wrong doing with alacrity.

So close to Christmas, I reconsidered, since he had 3 children, and I did not want that on my conscience.

He presented me with information, which was pertinent to his situation.

So I will let him keep his job, its the least I can do for my son.

Answer 2

Here are some sentences the might work
1. The ladder was a useful expedient for getting to the second floor.
2. We accepted the invitation with alacrity.
3. I'd eat another piece of pie but my conscience would bother me.
i don't know the last one.