Answers for these? It's based on a reading in the "Deutsch Akutell 2" book, pages 39-42. Please help :)

Don't delete this someone teach me german

When you use construct a sentence in german in past tense for example i drank milk on monday in the caravan the last tense version ich getrinken milsch am montag in mine whonwagen how would you put this is the write order if the sentence

He has recently read about that uses plants to remove harmful chemicals