Correct my prepositions

Hi
a. Do you think she will come -in- Easter?
b. My late wife died -in- 1996.
c. He’s having a urine test -on- Thursday.
d. He suffered a nervous breakdown -in- November.
e. We are having a party -in- two weeks. Would you like to come?
Please tell me that I have used right prepositions above.
Please correct if I am wrong.
Thanks,
Er.S.M.M.Hanifa

This one is wrong. Please try again:

a. Do you think she will come -in- Easter?

Mister Micawber,
a. Do you think she will come -on- Easter?
I have corrected now.
Is it OK now?
Thanks,
Er.S.M.M.Hanifa

Yes, ‘on’ or ‘at’.

I would use ‘on Easter day’ or
‘at Easter’ meaning the several day period of Easter-tide.
‘… on Easter’ without the addition of the word ‘day’ sounds strange to me. (UK)