Ответьте на вопрос what was economics first considered to be?

  in 1776 is  considered to be   the  first   formalisation of  economic   thought.

Present simple/past simple/present perfect? why? 1. look. your house is finished. a how long do you work on it? b how long did you work on it? c how long have you worked on it? 2. we live in a village now. a but we lived in a big city for 5 years. b but we have lived in a big city for 5 years. c but we lived in a big city lately. 3. you can drive my car. a did you ever drive a car before? b did you drive a car yet? c have you ever driven a car before? 4. where is elizabeth? a she went to school already. b she has already gone to school. c she already went to school. 5. i have had good lunch today. a where had you the lunch? b where did you have the lunch? c where have you had the lunch? 6. do you think you can do it for me? a i'm sorry, i didn't understand. b i'm sorry, i haven't understood. c i'm sorry, i wasn't understanding. 7. do you know james stuart? a yes, i have known him since 1997. b yes, i know him since 1997. c yes, i have known him from 1997. 8. peter is back from london. a did he bring me any postcards? b did he bring any postcards for me? c has he brought me any postcards? 9. have you seen the headmaster? a yes, i've seen him in his office. b yes, i saw him in his office. c yes, i see. 10. your sister speaks english very well. a she studied english since she was seven. b she has studied english since she was seven. c she studies english since she was seven. 11. could i speak to mr. daly? a hold on. he has just come. b hold on. he just came. c hold on. he came just now.