A - тільки ставиш дієслова у минулий час B - даєш короткі відповіді на запитання
C- теж ставиш дієслова у минулий час
D - є речення стверджувальне, ти його переробляєш якщо - то в заперечення якщо ? То в питальне
бонус​

  A

1. played                        13. warned

2. walked                       14. washed

3. watched                     15. tried

4. listened                      16. turned

5. waited                        17. questioned

6. checked                     18. observed

7. asked                          19. needed

8. wanted                       20. lived  

9. called                          21. laughed

10. delivered                   22. killed

11. decided                      23. kissed

12. worked                      24. invited

  B

1. yes, you did

  no, you didn't

2. yes, he did

   no, he didn't

3. yes, she did

   no, she didn't

4. yes, she did

   no, she didn't

5. yes, he did

   no, he didn't

  C

1. visited

2. listened

3. studied/answered

4. Did/finish, didn't

5. waited/didn't come

6. asked

7. Did/invite

8. knocked/didn't open

9. walked

10. happened

11. checked

12. delivered

13. lived

14. didn't study/fell

  D

1. Clare didn't play tennis this weekend.

2. David didn't wash his car on Saturday.

3. Did Kate finish her homework?

4. All the students didn't answer the questions.

5. Marta didn't wait for the bus.

6. Did Elisa call Sue to go out?

7. Did John watch TV all the day?

8. Did Alex wash the dishes?

9. Dorothy didn't invite me to her birthday party.

10. Did Julia clean the entire house this morning.

slavery  is, in the strictest sense of the term, any system in which principles of  property law  are applied to people, allowing individuals to own, buy and sell other individuals, as a  de jure  form of  property.  a slave is unable to withdraw unilaterally from such an arrangement and works without  remuneration. many scholars now use the term  chattel slavery  to refer to this specific sense of legalised,  de jure  slavery. in a broader sense, however, the word slavery may also refer to any situation in which an individual is  de facto  forced to work against his or her will. scholars also use the more generic terms such as  unfree labour  or  forced labour, to refer to such situations.however – and especially under slavery in broader senses of the word – slaves may have some rights and/or protections, according to laws and/or customs.

slavery began to exist before written history, in many  cultures.  a person could become a slave from the time of their birth, capture, or purchase.

while slavery was institutionally recognized by most societies, it has now been  outlawed  in all recognized countries,  the last being  mauritania  in 2007. nevertheless, there are still more slaves today than at any previous point in history: an estimated 45 million people remain enslaved worldwide.the most common form of the slave trade is now commonly referred to as  human trafficking. chattel slavery is also  still practiced by the islamic state of iraq and the levant. in other areas, slavery (or unfree labour) continues through practices such as  debt bondage,  serfdom,  domestic servants  kept in captivity, certain adoptions in which children are forced to work as slaves,  child soldiers, and  forced marriage.