Explanation

Through means via.

Through indicated movement from one end to the other end.

The train has passed through the tunnel.

Explanation

Words like because, yet, so etc. are examples of Conjunction.

Because is a conjunction which means for the reason that.

Explanation

Adverb clauses answer questions of how, when, where, and why. Adverb clauses start with a subordinating conjunction.

A noun clause  contains a subject and a verb but it does not express a complete thought and cannot stand alone as a complete sentence.

Explanation

The idiom "it is raining cats and dogs", used to describe particularly heavy rain, is of unknown etymology and is not necessarily related to the raining animals phenomenon.

The phrase has been used at least since the 17th century.

Explanation

homogeneous

یکساں

Explanation

extempore

بنا تیاری کے

Explanation

I like teaching children.

میں بچوں کو پڑھانا پسند کرتا ہوں۔

No article required

Explanation

About should not be used after discuss.

Discuss means کسی بات کا جائزہ لینا، بات چیت کرنا، گفتگو کرنا

Explanation

نیچےdown 

Explanation

Hunger means بھوک 

This is a sentence of passive voice.

Therefore, "By" should be used.