Answer:
1. Numbers from 21 and 99 are hyphenated.
2. "High-water flotsam" is an example of a hyphenated compound modifier.
3."Red-winged blackbirds" is an example of a hyphenated compound modifier.
4."Forlorn-looking house" is an example of a hyphenated compound modifier.
5. Numbers between 21 and 99 are hyphenated.
Step-by-step explanation:
PLATO