Ответ:

1

1. I have already returned from Poland.

2. She hasn't visited these places of interest.

3. Has the climate of Ukraine changed?

4. They haven't arrived in Kyiv.

5. Have you seen the monument to Prince Yaroslav the wise?

2

1. Many museums in Kyiv have been visited

2. Tarasova Gora was seen in Kaniv by me.

3. An email to him has just been written by her.

4. Is Modern history of Ukraine learnt by you?

5. The tour around Ukraine will be booked by my cousin.

6. The tickets have just been exchanged.

3

The: Atlantic ocean, St. Lawrence river, Irish sea, UK, Netherland

Without the: Ben Nevis, Montana, America, Paris, Khreshchatyk street, Rome