Answer:
1. Historiador ha escrito un libro sobre la prehistoria.
2. Mayas habían desarrollado sus conocimientos matemáticos en el año 1500 antes de Cristo.
3. Los últimos años se habrán derrocado más de diez dictadores en Latinoamérica.
4. Las fuerzas armadas han establecido la paz en el país.
5. Dos meses después la batalla aún no había terminado.
Explanation:
1. Historian has written a book on prehistory.
2. Mayans had developed their mathematical knowledge in the year 1500 before Christ.
3. In recent years, more than ten dictators in Latin America will have been overthrown.
4. The armed forces have established peace in the country.
5. Two months later the battle had not finished yet.
A thesaurus is a book that's useful for finding synonyms and antonyms of
a word. This is particularly useful when one needs to find a better
equipped word for a piece of writing they are working on but are
struggling to find such a word within their own vocabulary alone.
B. subject because <em>I </em> is "doing" the subject.
I do know is the subject and verb.
