题目

I am absolutely convinced that China can become a    1    in the protection of wildlife. Your influence in the world means you can change the face of conservation in this century. This will be a contribution that would go down in history, one that your great grandchildren would speak of    2   . The greatest inheritance we can    3    the next generation is a safe and sustainable environment, the priceless endowment of nature. Let us not tell our children the sad tale of how we watched as the last elephants, rhinos and tigers died out, but the inspiring story of how We will go to a picnic if it __________ this Sunday.A. didn’t rain B. doesn’t rain C. won’t rain D. isn’t raining