Используя данные слова, составьте утвердительные предложения во времени present perfect continuous (при необходимости вы также можете добавлять слова в предложения). the dog / the cat / chase → you / the letter / write → they / a new iphone / invent → you / in a forum / chat / not → i / on the task / concentrate / not →
The dog has been chasing the cat.
You have been wrtiting the letter.
They have been inventing a new Iphone.
You have not been chating in a fourum.
I have not been concentrating on the task.