Answer:
1.) Christe gave Oliva her birthday present, yet she forgot left the party.
Dependent clause: yet she forgot left the party.
2.) Macey ordered a hamburger, milkshake, and fries be hungry, but she could not finish all of the food.
Dependent clause: be hungry, but she could not finish all of the food.
3.) She likes to sleep in, but she can get up early if she has a softball game.
Dependent clause: She likes to sleep in, (This is the beginning of the sentence and is an independent clause on its own.)
Step-by-step explanation: