Можно ли использовать слово reprove () в continuous tense. например: he is reproving him because he does nothing.

В Present Continuous есть одно из значений "для выражения нетипичных состояний" но всегда идет being + verb. В будущем такого нет
Так что, скорее всего нет.

I love to go to the river. But once I thought: everything is so clean the river? So I did some research. Every year in our country in the river poured thousands of tons of waste. Perishing many different fish and other inhabitants of reservoirs. The rivers flow into the sea, where the inhabitants also live. Especially for them is harmful plastic. Sometimes the seas are watching the whole island of plastic. More when there are heavy rains, they wash the fertilizer from the fields, and all that dirty water flows into the river. It is also very bad for the inhabitants of reservoirs. We must think with anxiety about the future and not to pollute rivers and other water bodies

Chester Zoo is one of the most famous and largest UK zoos. It was opened in 1931 not far from the English town of Chester.
The zoo has plenty of animals, birds and reptiles to see. In fact, there are more than 500 kinds of animals in Chester Zoo. Some of them belong to endangered species on the planet. In Chester Zoo, visitors canwatch the wildlife. The most popular attractions are “Butterfly Journey” and “Elephant of the Asian Forests”.
Although the Chester Zoo is home to rare animals from allover the world, it also has amazing children’s areas. Chester Zoo is open 7 days a week from 10 a.m.