Bonjour,
Réponse :
1. Is your sister watching the play ?
Yes, she is.
2. Are your friends going to the circus ?
No, they aren't.
3. Are they making a concert ?
Yes, they are.
4. Is her cousin playing in the circus ?
No, he isn't.
Explications :
Question:
Is / Are + sujet + V-ing ...?
Réponse courte :
Yes, pronom + is /are
No, pronom + isn't /aren't.
