Глагол "can" является глаголом состояния? Т.е его можно использовать во временах Continuous и Continuous Perfect??

Can - могу, умею. Употребляется в треx временах: present Simple (саn + глагол без окончаний); Past Simple (could + глагол без окончаний ); Future Simple ( will be able to .. + глагол без окончаний). Есть еще его синоним, to be able to, который имеет значение могу, в состоянии уже что-то делать (после перелома, например, болезни, или время появилось). Синоним также в трёх часах: present Simple: Today I am able to run, my leg doesn't hurt. My friend has recovered, he is able to play football. We have free time today, we are able to go to the country. Past Simple: Yesterday my leg didn't hurt, I was able to run. My friend has recovered, he was able to play football yesterday. We had free time yesterday and we went to the country. Future Simple: will be able to .../ shall be able to ... My leg doesn't hurt and I'll be able to play ball tomorrow.

Объяснение:

Аты сам(а) это предложение составила? просто правильно будет the paper has been already has the paper been published ? where the  paper  has been published? the paper has been already published, hasn't it? has paper been published or crushed down? what has been published?