Quite a lot of children get together in the park ________ June 1^st to celebrate Children’s Day．

1. A.
   on
2. B.
   from
3. C.
   at
4. D.
   by

Quite a lot of children get together in the park________June 1st to celebrate Children's Day.

　　A.on　　B.from　　C.at D.by