Use yet or already to complete the sentences. 1. Have you finished eating the salad yet?

2. Simon has not been to Canada

3. Sally has spoken to her friends.

4. Len has written the dictation.

5. Have you learned the new words?

6. Mark has not developed his speaking skills .

7. Has Bob washed your car ___ ?

8. Greg has given his talk.

9. Have you taken the dog for a walk ?

10. Dad has come back.

1.The root grows thicker with age and helps support the tree.

2.In trees as large as the coast redwood of California, the water may travel 400 feet from the lowest roots to the highest leaves.

3.This seems against the laws of nature as the most efficient suction pump can raise water to only 33 feet.

4.Bryophytes are very small, even the "giants" of this group rarely grow taller than 15 centimetres.

5.The ferns are better adapted to land than bryophytes.

6.We probably depend much more on the flowering plants than on any other type of plants.

7.In vascular plants the sporophyte is more conspicuous than in bryophytes.

8.A genus is a larger group than a species.

9.Species of one genus are closer related to each other than to other kinds of plants.

10.All plants in the world may be divided into phyla, which are farther divided into smaller groups called classes.

вроде бы так

1. English is spoken all over the world by people.

2. The garden is cleaned every Sunday by her.

3. This room is used just for important meetings by them.

4. Milk is brought to our house every day by the milkman.

5. My room isn't tidied up by my mother.

6. Presents are bought for us every Christmas by Tom.

7. Money is not paid for using Internet by us.

8. His son is sometimes taken from school by him.

9. Turkish is not spoken in the classroom by students.

10. Letters are not written to my friend's by me, but e-mailes are usually sent by me.

11. Our car is washed at the weekends by my father.

12. My appointments are organised by my personal assistant.

13. A lot of homework is given us by our English teacher.

14. Microwave oven is used for heating food by us.

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