来自高鑫的问题
teacher‘Dayis_______Septemter10thA.OnB,atC.inteacher‘Dayis_______Septemter10thA.OnB,atC.in
teacher‘Dayis_______Septemter10thA.OnB,atC.in
teacher‘Dayis_______Septemter10thA.OnB,atC.in


teacher‘Dayis_______Septemter10thA.OnB,atC.inteacher‘Dayis_______Septemter10thA.OnB,atC.in
teacher‘Dayis_______Septemter10thA.OnB,atC.in
teacher‘Dayis_______Septemter10thA.OnB,atC.in
答案:A.on
解析:原因很简单,时间状语只要具体指某一天,那没前面的介词就一定用on,这是固定的用法.
这种情况也要用on,IwillgohikingonSaturday'smorning.看句子的时间状语是星期六的早上,这里请注意,不管早上还是下午,或者什么时候,如果知道了句子指某一天,那就直接用on.