Ответ:
Объяснение:
1) Have.
2) Have.
3) Has.
4) Has.
5) Has.
6) Has.
7) Has.
8) Have.
9) Have.
10) Has.
1) I have done my homework
2) Greta has walked her dog
3) Galina has traveled in the Crimea
4) The alpinists have climbed the volcano
5) Karl has skied down a mountain
6) I have rode a camel
7) Carly and Sam have swum with dolphins