Explanation

Explanation

He became addicted to drugs at quite any early age.

وہ کسی بھی چھوٹی عمر میں منشیات کا عادی ہو گیا تھا۔

The correct preposition is "to."

"Addicted to" is the standard phrase indicating dependency on something, such as drugs.

Explanation

You have to leave your shoes by the doorآپ کو اپنے جوتے دروازے پر چھوڑنا ہوں گے۔

Explanation

They have all been friends since their first match as a team.

وہ سب ایک ٹیم کے طور پر اپنے پہلے میچ سے ہی دوست ہیں۔

"Since" is used to indicate the starting point of a continuous period of time.

Explanation

Congruent means موزوں یا مناسب

Synonym: Suitable, Fit

Antonym: Improper

Suitable: مناسب

Improper: نامناسب

Explanation

Laugh is an intransitive verb.

Laugh at someone means کسی پر ہنسنا یا مذاق اڑانا 

Laugh is generally followed by at

Never laugh at the old persons بوڑھے لوگوں پر کبھی نہ ہنسو

Explanation

She has been working in a factory since 2007.

Words like, morning, evening, midnight, June 2014, etc. are generally followed by the preposition Since. 

Explanation

The correct preposition after "invite" in this context is "to".

So the complete sentence is: "I invited him to the dinner."

Rule:

We use "invite someone to" an event or place (e.g., to a party, to dinner, to a wedding).

Explanation

To refer to a place, use the prepositions "in" (the point itself), "at" (the general vicinity), "on" (the surface), and "inside" (something contained).

They will meet in the lunchroom.

She was waiting in the car. 

Explanation

Discord means disagreement

Discord: خلش یا نااتفاقی

Synonym: Conflict, division

Antonym: Harmony, Agreement

Harmony: ہم آئنگی