They are busy. They are working at a very interesting project. (Составить 1 Общий вопрос,4 Специальный, Who guestion + вопрос к дополнению) Помогите пожалуйста
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1.Are they busy? 2. Who is busy? 3. What are they doing? 1. Are they working at a very interesting project? 2. Who is working at a very interesting project? 3. What kind of project they are working at? 4. What are they working at? 5. What are they doing?