Нужно составить с этими словами по одному предложению.

1. We were leaving the party when he arrived. 2. What were they doing when you saw them? 3. When he came to see me, I was having a bath. 4.I was reading a book when I heard the noise. 5.They were having supper when he visited them. 6.We were sitting here yesterday when he passed. 7.She was crossing the road when she saw the accident. 8.I was choosing the present when my friend entered the shop. 9.When my aunt was going home,she lost her purse. 10.His brother was sleeping when he left. 11.They were waiting for me at five о'clock yesterday. 12.What was he doing, when you arrived? 13.It was snowing when I went out. 14.Who came in when you were translating an article ? 15.When they were playing in my room, they found my notebook.

Is recycling necessary? Why?Recycling is necessary because it helps to protect the environment from rubbish and harmful substances. In addition, recycling saves forests.
We live in a beautiful planet . We have the most amazing nature in the world, but we treat it bad. We contaminate the environment with chemical and household waste, cut down forests and pollute seas and rivers. There are special organizations that deal with these problems, but each of us can and should help to keep our local environment in order. My friends and I have worked in the park near our school recently. Before this, the park was very dirty, there was a lot of garbage. We collected rubbish: cans of drinks, packaging of cigarettes and ice cream, candy wrappers and other litter and put it into the bins . After that, the park was clean and beautiful. I think everyone can do the same.