全部

1·He discovered that these people worked in the pub at 7 Cambridge Street. They had been given free beer and so had not drunk the water from the pump.

他还发现，这些人都在剑桥街7号的酒馆里打工，而酒馆为他们提供免费的啤酒喝，因此他们没有喝从宽街水泵抽上来的水。