В задании требуется заполнить пропуски в предложениях.
Предположу, что в исходном тексте имелись следующие фразы.
- This tour is a holiday for you with lots of interesting sights to see.
- You will travel to beautiful towns with ancient cathedrals and historical houses.
- You will also take part in a/an boat trip to the Ladoga lakes of Karelia.
Ответ:
- This tour is a holiday for you with lots of interesting sights to see.
- You will travel to beautiful towns with ancient cathedrals and historical houses.
- You will also take part in a/an boat trip to the Ladoga lakes of Karelia.