The Present Perfect Tense. Исправь ошибку:

They has seen this film.

Have you done already your homework?

Mr. Brown hasn't never travelled.

Have you see a kangaroo?

It have always been my dream to visit the Hermitage.

John has packed his suitcase yet.

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Afew hours of flight and the goal is achieved. in-flight refreshments, lunch, movies, and other creature comforts a lot to do. you should pre-book tickets for the desired day and the issue resolved. cons, as elsewhere, are present. some just don't tolerate flying through the air. someone is not satisfied with the price of tickets (in our time it is quite expensive). and someone just might be a phobia for the services of airlines in light of the ongoing collapse of the "aircraft". think, decide. несколько часов полета и цель достигнута. в полете прохладительные напитки, обед, фильмы и другие блага цивилизации много делать. следует заранее забронировать билеты на нужный день и вопрос решен. минусы, как и везде, присутствуют. кто-то просто не терпит полетов по воздуху. кого-то не устраивает цена билетов (в наше время это довольно дорого). а кто-то просто может оказаться фобией для услуг авиакомпаний в свете продолжающегося крушения "летательных аппаратов". подумайте, решите.

Dave: Hi Tim. What's up?

Tim: Oh, hi Dave! What are you doing here?

Dave: Oh, I've joined the Eco-helpers club.

Tim: Oh yeah, I've heard about that. Sally collects rubbish for recycling in the park every Saturday morning, doesn't she?

Dave: That's right. She's been doing that for a month. I've been building nesting boxes.

Tim: Nesting boxes?

Dave: Well, there aren't many trees left in the city for birds to build their nests. If we don't help them, they will have to leave the city.

Tim: That's interesting. What else have you been doing?

Dave: We've been planting trees and cleaning out ponds for a week now that the weather's good.

Tim: Your club sounds wonderful. I could join as well, couldn't I?

Dave: Of course you could. We really need volunteers, but you have to see Miss Jackson first. She'll tell you what to do.

Tim: Sounds great! I'll join first thing Monday morning

present perfect continious:

She's been doing.

I've been building.

have you been doing?

We've been planting trees and cleaning out.

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