1) Before we came they did\had done their work. 2)Nick had written to me before I sent\had sent my e-mail. 3) The door opened and my brother came\had come in. 4)By the age of to he learned\had realned to tead and write. 5)After he finished\had finished college, he went to University to become a biologist. 6)By the age of ten he had read\read all the books in his libary. 7) He was ready for his exams and soon became\had become the youngest scientist in the histity. 8)I came up to the table, sat\had sat down and began working. 9)She learned that I had become\became a champion. 10) Tom read\had read a lot of books on anatomy when he went to medical school. 11) My sister came from school very tired and decided\had decided to relax in front of the television. 12) The house looked terrible because the wind and the rain damaged\had damaged it badly. 13) By the beginning of the year she had joined\joined our team. 14) He began to feel better because he gave\had given up smoking. 15)I didn't feel very well because I had eaten\ate to much junk food .16)When his friends were in the second year, he left\had left school.
What problems we have on our earth? Global warming, floods, fires. But today i want to talk about theproblem with rubbish. People usually dont think about where to put the plastic bag or candy wrapper. Its very bad because people kill not only the environment, but themselves too! We can help our planet, if we think about this problem. You can put rubbish in a special bucket, if you cant see it, you should put it into your pocket, and find a bucket. To conclude, i hope people will understand, that the most problems, because of their irresponsibility.