6. a) They ____ (decorate) the attic all afternoon, and their clothes are covered in paint. b) They ____ (decorate) the attic for the party, and it looks really cool now.

Перевод задания: Раскройте скобки, используя Present Perfect или Present Perfect Continuous.

1. a) They have been decorating the attic all afternoon, and their clothes are covered in paint. (Они украшают чердак весь день, и их одежда покрыта краской.)
   Present Perfect Continuous подчёркивает длительность процесса — all afternoon.
   b) They have decorated the attic for the party, and it looks really cool now. (Они украсили чердак к празднику, и теперь он выглядит очень здорово.)
   Present Perfect подчёркивает результат — чердак готов.