1. I have recently been to Egypt.

2. It has become very frosty recently.

3. The lesson has already begun.

4. The workers has just built a new house

5. My father has bought a new car.

6. Look! Your cat has caught a mouse.

7. Our teacher hasn't come yet.

8. Oranges has cost less recently.

9. My little brother has cut his finger.

С глаголом can-present perfect предложение не ставится