(1-2 сделать вопросительное предложение), (3-5- отрицательные) 1) Askania-Nova Nature Reserve is a beautiful place where you can meet all kinds of birds.
2) There was a time when dinosaurs dominated our planet.
3) The Shatsh group of lakes occupies a large territory, on which there are more than thirty lakes.
4) I love the article on environmental issues that you wrote
5) This is the man whose first wildlife novel became a bestseller.

1) Is Askania-Nova Nature Reserve a beautiful place?

2) There was a time when dinosaurs dominated our planet, wasn't it?

3) The Shatsh group of lakes doesn't occupies a large territory, on which there are more than thirty lakes.

4) I don't like (используй like, как глагол, чтоб указать, что тебе что-то нравится, а если love это больше как любовь к определенному человеку или живому существу) the article on environmental issues that you wrote.

5) This is the man whose first wildlife novel didn't become (пишем первую форму, так как есть вс глагол did в времени) a bestseller.