Ответ:

1) We have never worked together.

2) They have already been to this beautiful country.

3) Somebody has stolen my wallet in the institute.

4) I have just had breakfast with my family.

5) She hasn't eaten at this restaurant yet.

Объяснение:

Ответ:

1)Nick has been doing his homework for forty minutes now.

2)We have been boating for an hour now.

3)Tom has been washing his father's car for twenty minutes.

4)The boys have been riding bikes since 4o'clicks

5) Jessica has been preparing for her final exams since early morning.