Answer :
Answer: ''...pop some popcorn and watch a movie''
Explanation:
A Complete Predicate refers to the action verb in the sentence as well as the phrase that describes the action and completes the sentence.
For instance; In the following sentences, the underlined words are the Complete Predicate;
The old man drove very slowly through the highway.
Another student helped her with the assignment.
For the sentence in the question therefore, the complete predicate is;
After we get home, let's pop some popcorn and watch a movie.