The doctor replied that 'a lot of old people would stay in bed without any cause if they weren't made to get up'.

I will make my meaning clear to you,' replied the doctor.

The Doctor replies that his voice "has changed, several times".

"I rather thought we had been fighting all this while," replied the Doctor.

"Yes," the doctor replied, without looking up from the notes he was making.

"That'll keep her under for at least two hours," the doctor replied.

"The computer should have accepted it," the Doctor replied with concern.

"Yeah, and I could say the same to you," the doctor replied.

"For the past couple of hours, Doctor," the officer replied.

"You can pay for it with this," the doctor replied, pressing something into his hand.