Question

We write letters.

convert in present perfect continuous tense
I am reading a book.
past perfect tense​

Answer 1

Step-by-step explanation:

we write letters.

convert in present perfect continuous tense:

we´re writing letters

I am reading a book.

past perfect tense​:

I was reading a book

Answer 2

we write letters.

convert in present perfect continuous tense

I am reading a book.

past perfect tense

Answer:- I was reading a book