Explanation

A word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause is called preposition.

Explanation

Here boy is not specific.

We use the for specific nouns.

A boy is swimming in the pool. (Correct)

Explanation

Boycott بائیکاٹ

Explanation

epidemic

وبا

synonyms for epidemic

pandemic.

sweeping.

communicable.

prevailing.

prevalent.

rampant.

Explanation

To make a question in the Past Tense in English we normally put the auxiliary DID at the beginning of the question or before the main subject.

Explanation

We can also use by before a specific time.

By is a preposition here.

Here by 9 means نو بجے تک

Explanation

Disheveled منتشر۔

Tidy صاف ستھرا, نفیس

Explanation

بہتی گنگا میں ہاتھ دھونا ۔ وقت کو غنیمت جانو

Take advantage of the chance to do something while conditions are good.

Explanation

Given sentence is in Past simple tense and it is in active voice, we need to change it into passive voice.

Rule :
Subject + (was / were) + V3 + Optional Agents

Explanation

ü  To ensure something is to make sure it happens -- to guarantee it.

ü  To insure something or someone is to cover it with an insurance policy.

ü  To assure someone is to remove someone’s doubts.