кратко можно Exercise 1. Answer the followcing questions.
1. How do cconomusts detine wealth?
2. What does salary's purchasing power tell u5?
3. How is purchasmg power parity PPPI calculated
4. What do exchonge tates reflecr
5. Why is ar difficult to rely on any one statistic in derenmining a nation's weilth?

1) He will have been here for two hours by the time you come back. 2.”It is very late.” – “They will be back soon.”3. “There are no planes tonight.” – “Never mind, I will go by train.” 4. Will you be angry if I talk to you about it? 5. By the time you finish cooking they will have done their work. 6. “I am afraid, my train will have left by that time.” – “Don't worry, I will drive you home.”7. I hope it will have stopped snowing by tomorrow morning. 8.If you think it over you will see I am right. 9. If you don't take a taxi, you will be late. By the time you get to the theatre the first act will have been over and you will miss the most interesting dialogues.   

1) He will have been here for two hours by the time you come back. 2.”It is very late.” – “They will be back soon.”3. “There are no planes tonight.” – “Never mind, I will go by train.” 4. Will you be angry if I talk to you about it? 5. By the time you finish cooking they will have done their work. 6. “I am afraid, my train will have left by that time.” – “Don't worry, I will drive you home.”7. I hope it will have stopped snowing by tomorrow morning. 8.If you think it over you will see I am right. 9. If you don't take a taxi, you will be late. By the time you get to the theatre the first act will have been over and you will miss the most interesting dialogues.