at
时刻前用AT用at in on填空1.He is going to telephone___________five o'clock.2.My brithday is _____May 21st.3.It is always cold______February.4.My father was there_____1984.5.He is going to arrive_____Tuesday.那这几题你会不会！1 at2 on3 on4 in5 on在某年/月/季度等用IN； 具体到某一天用ON