Переделайте в страдательный залог и нужно перевести, это по , ну можно и по 1. кто-то запомнил эти факты. 2. красивый город был расположен на реке. 3. люди построили много небоскрёбов в нью-йорке. 4. маленький белый медведь жил в городском зоопарке. 5. люди некоторые виды вымирающих животных. 6. моя бабушка поливает маргаритки и анютины глазки в своём саду. 7. дик весной путешествовал по австралии. 8. они обнаружили маленький остров в середине озера. блин! ..

1. These facts are remembered by somebody.
2. A beautiful city was situated on a river. - Passive Voice
3. A lot of (many) skyscrapers in New York were built by people.
4. A little polar bear lived in a city zoo. - никак
5. Some endangered species of animals were saved by people.
6. Daisy and Pansy are watered by my grandma in her garden.
7. Last spring Dick was on a tour through Australia. - никак
8. The small island was discovered by them in the middle of a lake.

1. These facts are memorized by someone.
2. A beautiful city was situated on a river. - Тут причастие уже в страдательном залоге.
3. A lot of skyscrapers in New York was built by the people.
или
3. Many skyscrapers in New York were built by the people.
4. A little polar bear lived in a city zoo. - Имхо, перевести в страдательный нельзя.
5. Some endangered species were saved by the people.
6. Daisies and pansies are watered by my grandma in her garden.
7. Last spring Dick was on a tour through Australia. - Имхо, перевести в страдательный нельзя.
8. A small island in the middle of a lake was discovered by them.