It is ______ to have achieved so much in such a short time.
A. something B. anything C. nothing D. everything
In fact, the renovation is just one move in a huge project to improve Chinese teachers’ housing ______ in recent years.
A. situations B. equipment C. circumstances D. conditions
A curve is a line ______ no part is straight and which has no angle.
A. that B. whose C. in which D. of which
Research shows that humans ______ from selfish to unselfish behavior when they are watched.
A. tell B. switch C. range D. distinguish
______ 6 world powers have accepted ______ Iranian offer for talks on its disputed nuclear program.
A. The; a B. 不填; an C. The; an D. 不填; a
请你根据以下提, Never be afraid of making mistakes. In fact, making progress is making mistakes. Mistakes are where success lies.并结合自己生活中的一个事例，用英语写一篇短文。
注意：1．无须写标题，不得照抄英语提示语；
2．除诗歌外，文体不限；
3．文中不得透露个人姓名和学校名称；
4．词数为120左右。
注意：文章首句已给出。
Mistakes are unavoidable in life.___________________________________________________________
