Срочно нужна помощь

Insert prepositions where necessary.

1. Who often goes _ business _ your firm? 2. What floor do they live _ ? 3. What does he usually have _ supper? 4. _ Monday he arrives _ the office _ 8.30am. 5. How many pupils were there _ the English lesson _ Tuesday? 6. There is no cinema _ the end _ our street. 7. Can you put me through _ your manager? I' m sorry, he is _.