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I'll take appropriate action.
I'd like an explanation for the delay.
I'll see this through to the end responsibly.
Depending on your response, we'll have to reconsider.
I'd appreciate a good-faith response.
Could you address this promptly?
Could I have your response in writing?
I appreciate your sincere handling of this.
She made the deadline by the skin of her teeth.
Let's check the facts before we discuss it.
The project is finally taking off.
Just to confirm, this is what you mean, right?