Our headmaster told us that our classroom was so dirty that it must__clean.A keep B be kept C been kept

Our headmaster middle school students not to smoke for several times.为什么不能用过去式而用完成时?Our headmaster （ ） middle school students not to smoke for several times.为什么不能用told 而用has told? Our headmaster told us that our classroom was so dirty that it must__clean.A keep B be kept C been kept a letter to our headmaster 英语作文 This is our headmaster.改为一般疑问句 welcomes,headmaster,our,you连词组句 介词填空Our headmaster showed the visitors 什么our school we have met our headmaster in several occasions 该错 our headmaster will come back from the USA two days with the p_____ of the headmaster,our class visitethe zoo Our headmaster took many exchange students to visit our school.(保持原句意思不变)Our headmaster _____ many exchange students ______ our school. 一个史上很难解释的英语句子（1）Several weeks ago,our headmaster,Mr.Gaudi,told usthat our school had been chosen to compete on Smart Aleck—a game show which my best friend C arla and I both love.Carla has a good imagination,and I know 一个史上很难解释的英语句子,务必精英进（1）Several weeks ago, our headmaster, Mr. Gaudi, told usthat our school had been chosen to compete on Smart Aleck—a game show which my best friend C arla and I both love. Carla has a good i 英语翻译（1）Several weeks ago,our headmaster,Mr.Gaudi,told usthat our school had been chosen to compete on Smart Aleck—a game show which my best friend C arla and I both love.Carla has a good imagination,and I know a lot of history,so we tho the headmaster told us to arrive at the museum on time中的不定式做什么成分 完形填空I know Ishould have told the headmaster at the time Our headmaster is the top banana in our school.the top banana的意思. He,our headmaster,was_____ pleased with our work A.such B.even C.much D.greatlywhy (没有太大的关系)_______whether our headmaster supports our activity.用名词性从句翻译