【单选题】________ students are in the classroom. [ ]
【单选题】计算机中的字节是个常用单位,它的英文名字是
【单选题】It's a rule for all the students to _____ their places ahead of 5 minutes waiting for the class to be started.
【单选题】The rule required that all of us ______ at the office by two o’clock.
【简答题】All of us think that you have committed a/an ______ against the rule.
【简答题】The rule us all to be present.