Final answer:
In reaction to the Doctor's condition, Mr. Lorry sighs deeply and expresses his distress, and also shows his intention to take action or leave.
Step-by-step explanation:
In reaction to the Doctor's condition, Mr. Lorry does two things. Firstly, he sighs deeply, expressing his concern and distress over the situation. This can be seen when the Doctor sighs, asking, 'God help us! Who is responsible?' Secondly, Mr. Lorry gets up and claps on his hat, indicating his intention to take action or leave. This can be observed when he gets ready to leave, with others trying to stop him from making a hasty decision.