Last summer he taught us( )poisonous gas

Last summer he taught us( )poisonous gas Last summer I took a course on( )poisonous gases 改为被动语态he taught us english last year(两种) He is a teacher who (that) taught us English last year. 英语翻译Mr Shute taught us maths in a middle school last term.He 英汉互译1.He was the English teacher who taught us last year.2.T poisonous gas 和poison gas 有什么区别 toxic gas和poisonous gas 有何区别? he visited beijing zoo last summer对last summer提问 D____ the whole class he taught us some English songs. this poisonous gas was quickly building up 中building up He taught himself last year.的同义句是?