Fill in the gaps with appropriate preposition/article

Nobody knows it......... Rahim.

Correct the following sentences:

This is an unique case.

Transform the following sentences:

Cats kill mice. (Passive)

Convert into compound sentence

Working hard, he passed the examination.

Use right form of verbs:

He (come) yesterday.

Translate into English

ছেলেটি পালিয়ে গেল