Categorize the following sentence as an interrogative, a declarative, or an imperative sentence: "Let us go".
The sentence "Let us go" can be categorized as an imperative sentence.
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the following sentence as an interrogative, a declarative, or an imperative sentence: "Let us go".

### Output:
The sentence "Let us go" can be categorized as an imperative sentence.