Had she worked? Had Mary cleaned the room by 7 o'clock? Had her read the book before he saw the film? ( насчет этого не слишком уверенна ну и ладно). Had my sister written the letter by the time her dad came home? Had she visited her sister before she went to Mexico? I hadn't cleaned it ( отрицание). He hadn't written the letter. She hadn't watched TV. I hadn't seen the boy. He hadn't played. We had played ( утверждение). They had written the letter He had seen the film before. She had just planted roses before he came. They had done their homework Вроде бы всё :D
Объяснение:
Complete the definitions.
the earth; destroys the ozone layer; smoke from factories; plants and animals; carbon dioxide
1. Conservation is the protection of natural things, e.g. plants and animals
2. Acid rain is rain that contains dangerous chemicals. It is caused by smoke from factories.
3.The ozone layer is a layer of gases that stop dangerous radiation from the sun reaching the earth;.
4. Global warming is an increase in world temperature caused by an increase in carbon dioxide.
5. CFC (chlorofluorocarbon) is a chemical which destroys the ozone layer.