Question

add question tag on nobody was at home​

Answer 1

Explanation:

auxiliary verb + subject

We use the same auxiliary verb in the tag as in the main sentence. If there is no auxiliary verb in the main sentence, we use do in the tag.

You live in Spain, don’t you?

If the auxiliary verb in the sentence is affirmative, the tag is negative.

You’re Spanish, aren’t you?

If the auxiliary verb in the sentence is negative, the tag is affirmative.

Answer 2

Answer:

We use nothing, something and everything with it when we make a question tag:

Nothing + clause, + [question tag with it] ?

Something/Everything + clause, + [question tag with negative auxiliary and with it] ?

We use nobody, somebody and everybody with they when we make a question tag:

Nobody + clause, + [question tag with they] ?

Somebody/Everybody + clause, + [question tag with negative auxiliary and with they]