Which group of words is a phrase? They writhe in anticipation the mighty river is full of crocodiles the herds will race across the plains once it is time to migrate

The answer is 'once it is time to migrate'

D. once it's time to migrate

Explanation:

I got it correct, hopefully this one is correct for you :D

"freedom of speech, freedom of worship, freedom from want, and freedom from fear.

the four freedoms were goals articulated by united states president franklin d. roosevelt on january 6, 1941"

comfortable

explanation:

one type of the adjectives is predicate adjective. a predicate adjective is an adjective which follows a linking verb and modifies or refers back to the main subject of that linking verb.

it usually is used just before the noun it modies.

here in this example:

'penguins seem comfortable in the coolest habitats', comfortable is the predicate adjective which follows the linking verb 'seem' and modifies the noun.