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PRACTICEDate: 2015-10-07; view: 497. Combine each of the following pairs of sentences into one sentence with a proper relative pronoun. 1. A group will carry out this investigation. This group will be organized.
2. A machine is in the next room. The machine will make calculations.
3. Barnard operates on the human heart. He is a heart surgeon.
4. Computers are now helpful in a wide range of applications. Their functions are various. 5. His articles will be published soon, of which one is on the subject of scientific experimental methods.
6. Many people's lives rely on kidney machines. They can still run their lives for a long time.
7. Marie Curie had a happy family life. Her devotion to science is very important.
8. Most of our food consists of animal and plant cells. These cells contain a high proportion of water.
9. Scientists are now facing a lot of matters. One of the matters is that of environmental pollution.
10. The doctor has saved a lot of lives. His patients are normally heart attacked.
11. The edition of the world science magazine this month is very interesting. Its cover is the picture of a virtual nuclear reactor.
12. The method is rather simple. It should be followed.
13. The students missed the start of the experiment. They were late for class.
14. The temperature of the ambient air is very important to this experiment. It should be always kept at 15 0 C.
15. There is one more important question today. We must discuss the question thoroughly.
16. We eat some farm birds. They are known as poultry.
17. We have helped thousands of patients. Many of them have difficulty in language production.
18. We must obtain data for the report. The data must be of great importance.
19. We will use the material here. The material is of high quality.
20. Yeast and mould are fungi. Fungi grow on food.
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