нужно сделать до завтра
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they will have planted trees in their garden by 7 o'clock tomorrow в future in the past будетиметьтакойвид: they would have planted trees in their garden by 7 o'clock tomorrow. соответственно вопросы будут следующие:

would  they have planted trees in their garden by 7 o'clock tomorrow?

would  they have planted trees or flowers in their garden by 7 o'clock tomorrow?

who would  have planted trees in their garden by 7 o'clock tomorrow?

what would  they have planted in their garden by 7 o'clock tomorrow?

where would  they have planted trees by 7 o'clock tomorrow?

when would  they have planted trees in their garden?

what would  they have done in their garden by 7 o'clock tomorrow?

they would have planted trees in their garden by 7 o'clock tomorrow, wouldn’t they?  

meet-met

take-took

be-was/were

fall-fell

see-saw

go-went

give-gave

fly-flew

have-had

you can dance and you can play,

you can be happy every day.

1when  has he/she ever argued with his/her parents? 2)when  has   he/ she  been badly injured  ? 3)where ! has  he/ she has been badly injured? 4)does  he/she have any relatives(friends) at university? when  did they enter their universities? 5)can  he /she can remember a book in which a character rescued a person or an animal?   what  book  was it ? 6)has  he/she  ever helped injured people or injured animals? where has  he/she  helped injured people or injured animals exactly  ? 7)when and why  does he/ she write brief letters? ; 8)what languages  does he/ she speak fluently?