EXERCISE 18-1 Making Sentences Parallel
Revise the following sentences by substituting parallel structures for awkward ones. Example:
The border separating Texas and Mexico marks not only the political boundary of two countries, but it also is the last frontier for some endangered wildlife.
In the Rio Grande Valley, both local residents and the people who happen to be tourists enjoy visiting the national wildlife refuges.
The tall grasses in this valley are the home of many insects, birds, and there are abundant small mammals.
Two endangered wildcats, the ocelot and another called the jaguarundi, also make the Rio Grande Valley their home.
Many people from Central America are desperate to immigrate to the United States by either legal or by illegal means.