Question

select the words that make up the complete predicate. germany invaded poland in september 1939.

Explanation:

A complete predicate includes the verb and all the words that tell what the subject does or is. In the sentence "Germany invaded Poland in September 1939", the subject is "Germany". The verb is "invaded", and the words that follow (including the direct object and the adverbial phrase) form the complete predicate. So the complete predicate is "invaded Poland in September 1939".

Answer:

invaded Poland in September 1939