Answer:
needn't have
Explanation:
A sentence can be defined as a group of words that comprises of both a subject and predicate used to convey a logical information. Sentences are classified into four (4) main categories and these includes;
I. Simple sentence.
II. Compound sentence.
III. Complex sentence.
IV. Compound-Complex sentence.
Furthermore, sentences are classified into four (4) main categories based on their functions and these includes;
a. Declarative sentence.
b. Imperative sentence.
c. Exclamatory sentence.
d. Interrogative sentence.
In this scenario, the most appropriate phrase to fill in the blank is "needn't have" because it implies that the action was performed but it was unnecessary i.e need not to have been done.
Hence, the complete sentence would read: "You needn't have brought food. We have got plenty here."
This ultimately implies that, the subject brought a lot of food but it wasn't necessary because they got plenty food at the place.