Explanation

If two nouns are joined by preposition, the noun on either side singular and the verb is also singular.

Day by day is the correct sentence.

Explanation

Exchange means  To give something to somebody and at the same time receive the same type of thing from him.

Exchange means ایک جیسی چیز کا تبادلہ کرنا

AGM 2101 23

Explanation

We are answerable to God.

ہم خدا کے لئے جوابدہ ہیں۔

We use "to" because it conveys the idea of being responsible.

Explanation

Do not shout to me, I am not deaf.

مجھے مت چیخو، میں بہرا نہیں ہوں۔

The sentence means "don't shout at me" or "speak normally to me".

Explanation

The phrase "got over" means to successfully pass or overcome something.

In this context, it refers to overcoming an examination, often due to hard work.

Explanation

Both Laugh and Sneer are followed by preposition at. 

Sneer at means مزاق اڑانا یا طنز کرنا

You should not sneer at the boy.

We must not sneer at elders. 

He was laughing at the poor.

Explanation

He was ill with a fever

وہ بخار سے بیمار تھا۔

The phrase "ill with fever" is the correct way to describe someone suffering from a fever.

The preposition "with" is used to indicate the illness or condition affecting the person.

The other options ("ill to fever" and "ill by fever") are grammatically incorrect.

Explanation

He is deficient in common sense.

وہ عقل سے عاری ہے۔

in: to say someone is deficient in common sense is the best preposition to use to say that someone lacks common sense. 

Explanation

The correct preposition with "entitled" is "to".

It indicating a rightful claim or eligibility for something.

Explanation

Usage of Behind

Behind --- In, to or towards the near or later in time.

Examples:

 He followed behind.

The girls were far behind the car.

The train was behind time.