помогите задать общий,специальный, вопрос к подлежащему к каждому предложению

1. Our teacher knows several foreign languages. - Does our teacher know several foreign languages? - How many languages does our teacher know? - Who knows several foreign languages?
2. Mrs. Brown saw a new film yesterday. - Did Mrs. Brown see a new file yesterday? - What did Mrs. Brown see yesterday? - Who saw a new film yesterday?
3.Jack has already begun to read a new book. - Has Jack begun to read a new book yet? - What has Jack begun to read? - Who has begun to read a new book?
4. Students must work hard today. - Must students work hard today? - Why must students work hard today? - Who must work hard today?
5. They are working in the garden. - Are they working in the garden? - Where are they working? - Who is working in the garden?

1) Does our teacher know several foreign languages? | What does our teacher know?

2)Did Mrs. Brown see a new file yesterday? | What did Mrs. Brown see yesterday?

3)Has Jack already begun to read a new book? | What Jack has begun to read?

4) Must student work hard today? | Why students must work hard today?

5) Are the working in the garden? | Why are they working in the garden?