In the past,there were no buses with_____(air-conditioner).They were not______(air-conditioner) 能说明理由就说明一下理由,谢谢!

填 air-conditioners,air-conditioned
第一个空是“with+名词”结构,“带有.的”的意思,故用名词air-conditioners（空调机）；第二个空,是个被动语态,be air-conditioned ,是“被配备空调”的意思.