假设你是北京市某中学高三年级的学生李华，擅长舞蹈。你报名参加了2009年国庆60周年晚上的联欢。请根据以下四幅图的先后顺序，写信给你的笔友David讲述参加活动的全过程以及你的感受。信的开头和结尾已经给出。
注意：词数不少于120。 提示词：联欢get-together
Dear David,
I am writing to share the great happiness of taking part in the performance in celebration of the 60th national anniversary.____________________________________________________________
I will enclose some pictures taken that evening.
Wish you all the best!
Yours,
Li hua
The young lady was careful _________.
| A．not repeating her mistake | B．not repeated her mistake |
| C．to not repeat her mistake | D．never to repeat her mistake |
________ their inexperience, they’ve done a good job.
| A．Given | B．To give | C．Giving | D．having given |
Though they had a meeting yesterday, there is still much that remains______.
| A．to solve | B．to be solved | C．solving | D．solved |
The students expected there ________ more free time before the test.
| A．is | B．have been | C．to be | D．being |
Does the way you thought of ________ the water clean make any sense?
| A．making | B．to make | C．how to make | D．having made |