Change the following sentences into negative! 1. My accountant is calculating the total expenses we need. 2. My little sister is returning the books to the libr

Change the following sentences into negative!
1. My accountant is calculating the total expenses we need.
2. My little sister is returning the books to the library.
3. The guests are having lunch with my supervisor.
4. John is paying the food he ordered.
5. My supervisor is still training some new employees in the
training room.

C. Change the following sentences into interrogative!
1. She is doing something in the meeting room.
2. The investors are calling all mechanical staffs in London.
3. Billy is reporting to his boss in the head office.
4. Brenda is recording all today's transactions.
5. The receptionists are still talking to one of my guests.