tolong bantu jawab ya

aku coba jawab, maaf ya klo slah dan tdk mmuaskan....

1. This piano weighs 400 kgs. We need the help of professionals.
2. She/he came at 8.00 am. She/he should come to school before the first bell ringing at 7.30 am.
3. When did he buy a lot of book?
4. Where did Sonya go couple of weeks ago?
5. His duties are controlling movie's artistic, reading the script in order to make sure that it makes sense, guiding what the actors and the technical crew must do.