1. What was each boy given for Christmas?

Question

2. What was each boy given at Christmas?

3. What was each boy given on Christmas?

4. What was each boy given on Christmas Day?

5. What was each boy given at Christmas Day?

(Which ones are grammatical? When can we use the preposition 'for'? Before Christmas, can we use 'for Christmas'? On Christmas Day, can we use 'for Christmas'?)

Answer 1

1, 2, and 4 are correct. 3 and 5 have incorrect prepositions. Yes, you could use "for Christmas," too.