围绕本课标题 Escape 脱逃（战俘脱逃）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：When he had killed the guard / dragged him into the bushes / Working rapidly in the darkness / changed into the dead man's clothes / dressed in a blue uniform / with a rifle over his shoulder / marched boldly up and down / Lights were blazing / running here and there / a prisoner had escaped / a large black car with four officers inside it / stopped at the camp gates / stood to attention and saluted / elderly with grey hair and clear blue eyes / felt sorry for him / knocked him to the ground with a sharp blow / jumping into the car / he drove off as quickly as he could