School Puzzle

2. -able to speak two languages with the facility of a native speaker.
5. - any of various dinosaurs of the genus Triceratops, of the late Cretaceous Period, having a bony crest on the neck, a long horn over each eye, and a shorter horn on the nose.
8. - a strict isolation imposed to prevent the spread of disease.
9. - the faculty of understanding.
11. - three offspring born at one birth.
12. - he downy, yellow, sometimes rosy fruit, somewhat resembling a small peach, of the tree Prunus armeniaca.
14. - a messenger, usually traveling in haste, bearing urgent news, important reports or packages, diplomatic messages, etc.
15. - a customary or regular course of procedure
18. - a closed plane figure having three sides and three angles.
19. - any of a class of heavier-than-air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine.

1. - to spell incorrectly.
3. - a series or group of three plays, novels, operas, etc., that, although individually complete, are closely related in theme, sequence, or the like.
4. -a white, starchy pasta of Italian origin that is made in the form of long strings, boiled, and served with any of a variety of meat, tomato, or other sauces
6. - a musical instrument in which felt-covered hammers, operated from a keyboard, strike the metal strings.
7. - objects that are worn for personal adornment, such as bracelets, rings, necklaces, etc, considered collectively
10. - the day following today
11. - a vehicle, especially one for children, having one large front wheel and two small rear wheels, propelled by foot pedals.
13. - happening every two years
16. - a stool, table, pedestal, etc., with three legs.
17. - existing as the only one or as the sole example; single; solitary in type or characteristics: