Question

(vii) Let us keep him in our house. (Make it a negative sentence)​

Answer 1

Answer:

let us not keep him in our house

Answer 2

Let us not keep him in our house.

A negative sentence is a sentence that implies that something is false. To convert a sentence to its negative form, simply convert the auxiliary verb to its  contradicting form or add a 'not' in front of it.

Here, the auxiliary verb is 'let us'. It does not have a specific or unique contradicting form and so in order to convert the sentence to negative, you add a 'not' in front of it.