---Is Christmas____December 25th or 26th ? ---25th, I think.

A.on B.in C.at D.for

---________is Christmas?

---It's on December 25th.

1. A.
   What
2. B.
   When
3. C.
   How
4. D.
   Where

________ is on December 25th．

1. A.
   Labour Day
2. B.
   Spring Festival
3. C.
   National Day
4. D.
   Christmas Day