I think that we have many environmental problems for example air pollution, water pollution and more others. Air pollution is a very serious problem because it causes global warming and as a result climate change. The reason for global is polluting the atmosphere with green house gases. This can be a big problem for many plants, animals and people. Pollution is a very serious and we need to control and prevent it. We can reduce the amount of industrial wast and sewage. We can recycle all toxic materials. But the main thing is try to use the nature with care.
1.I am in the sixth form. - I am not in the sixth form 2.We are reading an interesting story.- We are not reading an interesting story 3.They study English for ten years.- They don’t study English for ten years 4.My sister plays the piano very well.- My sister does not play the piano very well 5.He was at the cinema yesterday.- He was not at the cinema yesterday 6.The children were playing in the yard.- The children were not playing in the yard. 7.I finished my work last Tuesday - I didn’t finish my work last Tuesday.- 8.We kept some domestic animals two years ago.- We did not keep some domestic animals two years ago. 9.They will write a test tomorrow.- They will not write a test tomorrow 10.He will go to the seaside next summer.- He will not go to the seaside next summer 11.I have already cleaned my room.- I have not already cleaned my room 12.She has done all the exercises.- She has not done all the exercises.
woke up (simple),had seen.