We . our homework варианты ответа have done , has done , have did . что вставить ?​

have done.

Объяснение:

1)tony has been writing the letter for an hour.

2/they have been cycling for a long time.

the children look after the animals and plants.

kirk cleans the puppies.

sam washes the cage.

mel waters the   flowers.

grace feeds the hamster and the turtle.

tom walks with the dog.