Fill in the correct passive form of the verbs in brackets. 1) the book (write) in 1900. 2) the book (write) in 2018. 3) the book (write) now. 4) the letter (already\write). 5) the letter (write) when the fire started.

1 was written
2 will be written
3 is being written
4 has already been written
5 was being written

1. was written
2. will have been written / will be written
3. is being written
4. had been already written
5. was being written