Decide whether each of the underlined constructions or word groups is headed or non-headed and name the type of constructions.
Ducks quack.
non-headed; exocentric construction
The ladder in the shed is long enough.
headed; endocentric construction
I saw a bridge damaged beyond repair.
headed; endocentric construction
He enjoys climbing high mountains.
non-headed; exocentric construction
The man nodded patiently.
non-headed; exocentric construction