Question

1. The children
happy today in question tag​

Answer 1

Correct question - The children are happy today . Add question tag.

Ans- The above sentence is in present indefinite/ simple present tense.

To make sentence in Interrogative or to add question tag -

structure - Is/Am/Are+Subject +object

Now in Interrogative or with question mark -

Are the children happy ?

Note : The answer refers to the structure..