Hi, this is the answer .
Tina's best food is daal bhat, <u>isn't </u><u>it?</u>
<em><u>Why </u></em><em><u>do </u></em><em><u>we </u></em><em><u>use </u></em><em><u>"</u></em><em><u> </u></em><u>isn't </u><u>it"</u><u>?</u>
<u>We </u><u>use </u><u>"</u><u> </u><u>isn't </u><u>it"</u><u> </u><u>because </u><u>when </u><u>we </u><u>write </u><u>question</u><u> </u><u>tags,</u><u> </u><u>we </u><u>should </u><u>check </u><u>for </u><u>words </u><u>like </u><u>is,</u><u> </u><u>was,</u><u> </u><u>do,</u><u> </u><u>will </u><u>etc.</u>
Below are some question tags, left side are the words, right side are the converted question tags form.
is - isn't
was - wasn't
do - doesn't
will - won't
<h2>
Note-</h2><h3>We write it, he, she , they etc. according to the given sentence.</h3>
Hope it helps you. pls mark brainliest if it helped you