Question

i have found the book .i lost (convert it into a compound sentence)

Answer 1

i found the book the which i lost

Answer 2

Answer:

The Compound sentence is:

I have found the book which I had lost.

Explanation:

A compound sentence is a sentence which is formed by the combination of two or more clauses which are independent. The independent clauses are joined together with the coordinators like and, or, but, such as, or a  semi-colon.