Answers:
Subject: the subject of a complete sentence indicates who or what the sentence is about.
Predicate: the predicate of a sentence tells what the subject is or does. In the predicate we find the main verb that tells the action perfomed by the subject.
1) The girls next door came to see me.
Subject: The girls next door
Predicate: came to see me
2) The aerobics class after work was noisy.
Subject: The aerobics class after work
Predicate: was noisy
3) The factory down the street burned to the ground last night.
Subject: The factory down the street
Predicate: burned to the ground last night
4) The heavy snow came unexpectedly yesterday.
Subject: The heavy snow
Predicate: came unexpectedly yesterday
5) The strong winds built high drifts.
Subject: The strong winds
Predicate: built high drifts