Ответ:

1. has been, was

2. have done, came

3. haven't found

4. has never visited

Ответ:

1. Jack has been to Spain already. He was there last summer

2.I have done the shopping already. I came home as hour ago.

3. We haven't found this book yet

4. My couisn has never vistied this museum

УДАЧИ!