use
At : for a precise time. for example at 9.30am.
In : for long periods Month, Years, Centuries. for example in 2010 , in winter, in May....etc.
On: for Days and dates. for example On sunday, On 8 May
Don't use : when use this, last , next and every it will not use at , in , on.
I ate a bagel this morning.
we will have meeting next sunday.
I went to JP last year.
I don't link every 14 February.
on Saturday at 8:00 in the morning.
Quze
1. Do you go to school __ Sunday.
2. I went to office __ 9.10 pm. this morning.
3. Where will you be __ July
4. I planed to get marry __ next year
5. I wolud like to arrange a meeting __ 23 Oct. 2010.
6. Will we be able to live somewhere out side of the Earth __ the next century
on , at , in , X , on , in