Answer 1

One possible version:

Dear David,

I am writing to share the great happiness of taking part in the performance in celebration of the 60th national anniversary.

Dancing is my hobby and therefore, when I heard there would be a get-together to celebrate the 60th National Day on the evening of October 1st, I signed up for the performance. Luckily, I became a member of the dance group.

During the summer vacation, I practiced hard with others regardless of the hot weather. After the new school term began, I carried on with the practice while I was working hard at my studies. And finally, the great day came. In the evening, thousands of people gathered in the splendid Tiananmen Square. With the bright lights shining around, we were dancing to the pleasant music happily and joyfully.l beautiful fireworks in the clear night sky added to my excitement. It was realty an unforgettable experience.

I will enclose some pictures taken that evening.

Wish you all the best!

Yours,

LiHua