Exercise 3:

1. B. much

2. C. look

3. C. how

4. A. beard

5. A. false

6. C. cupboard

7. A. genetics

8. A. cleanse

9. B. machinery

10. A. thank

Exercise 4 

1. D. drama

2. D. with

3. B. gem

4. D. then

5. B. says

6. C. cherish

7. D. trivial

8. D. collage

10. A. dynamic

Exercise 5

1. C. many

2. D. clearing

3. D. faced

4. D. whiten

6. D. watch

7. A. this

8. C. germ

9. C. plough

10. D. pear

Exercise 6

1. D. puncture

2. D. present

3. A. promise

4. B. livid

5. A. houses

6. D. cup

7. B. broad

8. C. angry

9. C. lost

10. A. distribute

Exercise 7

1. A. food

2. B. fragile

3. D. southern

4. D. walked

5. A.walk

6. C. height

7. D. conception

8. D. excursion

9. B. sacrifice

10. C. heir

Exercise 8. 

1. C. envelope

2. D. principle

3. C. bare

4. A. both

5. C. warm

6. B. pure

7. D. painted

8. D. ceiling

9. B. sew

10. D. tame

Exercise 10:

1. B. burning

2. D. sure

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