Составить предложение со словом cost

Составте: 1) предложение со словом variety 2) предложение со словом delight 3) предложение со словом unigue 4) предложение со словом magnificent 5) предложение со словом fabulous 6) предложение со словом win 7) предложение со словом exciting 8)

How much does it cost to fly to Boston? How much do it cost to fly to Boston? How much are it cost to fly to Boston? How much is it cost to fly to Boston? Какой вариант является првильным

Перевод текста Costs should include opportunity costs of all recourses used in production. Opportunity cost of a commodity is the amount an input can obtain in its best alternative use (best use elsewhere).

1) The coat ... 20 pounds on sale last week. - will cost - would cost - costs - cost 2) This is ... flat. -their - hers - its - а his 3) This is the monument I told you about. There are a lot of flowers around ... -him - its - it - them

Помогите перевести это предложение по нормальному. Я даже смысл не улавливаю. Opportunity cost refers to the economic cost of production: the value of the next best opportunity foregone.