Помогите Сказали что в одном нет ошибки а в остольных есть срочно.

1 where are you from?
2 they are going to the river for a swim.
3 he is sleeping now.
4 his father isn't watching TV at the moment.
5 is your father doing homework now? Правильно
6 they are playing in the yard now.
7 he is wearing a suit now.
8 you are working now.