Помогите пожалуйста. Найти предложение с пунктуационной ошибкой. Поставить нужный знак препинания. 1. Chuckles is climbing a tree. 2. Who is singing. 3. What is Tonya doing now. 4. Is she reading a book?
2. Who is singing? 3. What is Tonya doing now?