Question

cómo las cambio a negativas o interrogativas​

Answer 1

Creo que quedarían de la siguiente forma:

Is this my pencil?- That’s not my pencil

Is that your book?- That is not my book

This dictionary is from him?- This is not his dictionary

Is that her sister?- She is not her sister

Are those our teachers?- Those are not our teachers

Is this it’s food?- This is not they’re food

Is this their house?- this is not they’re house

No estoy seguro de que si sean así pero espero y te sirvan :’3