8. My children are traveling around Asia now.
(-) My children aren't traveling around Asia now.
(?) are your children traveling around Asia now
9. Her little brother is drinking milk.
(-) Her little brother isn't drinking milk.
(?) is Her little brother drinking milk
10. His teacher is speaking English with the foreigner.
(-) His teacher isn't speaking English with the foreigner.
(?) is  His teacher speaking English with the foreigner ?

4. My dog is playing in the yard now.
(-) my dog isn't in the yard now
(?) is your dog in the yard now?
5. Tom is playing games in the room.
(-) Tom isn't playing games in the room.
(?) Is Tom playing games in the room?
6. Their students are studying hard for competition.
(-) Their students aren't studying hard for the competition.
(?) Are their students studying hard for the competition?
7. All of Jack's friends are singing and dancing at the party.
(-) All of Jack's friends aren't singing and dancing at the party.
(?) Are all of Jack's friends singing and dancing at the party?
8. My children are traveling around Asia now.
(-) My children aren't traveling around Asia now.
(?) are your children traveling around Asia now?
9. Her little brother is drinking milk.
(-) Her little brother isn't drinking milk.
(?) is Her little brother drinking milk?
10. His teacher is speaking English with the foreigner.
(-) His teacher isn't speaking English with the foreigner.
(?) is  His teacher speaking English with the foreigner ?