This passage contains errors. Words in red are not in their proper place, and words in orange are not the ones which agree with their surroundings.
Drag red items to their proper place and click on and edit orange items. If you move a red item to its correct location, it will turn green. Otherwise, it will return to its point of origin. Similarly, if you type the correct form of an orange item, it will turn green. Otherwise, it will stay orange.