Explanation

"I was confident on my success" is the grammatically correct usage.

Confidence is generally followed by in/on depending on context, but with "success," on is standard.

Explanation

The sentence refers to an action continuing up to the present, so present perfect tense is correct.

Correct form: I have not seen her for a long time.

Explanation

"Some" is used with uncountable nouns like "coffee" when making polite offers or requests.

"Can you please give me some coffee?" is grammatically and contextually correct.

Explanation

The correct preposition is “from” when talking about preventing or discouraging someone.

Correct sentence:

"Nothing could deter Quaid-e-Azam from his principles."

Explanation

In clauses after “until”, the present simple is used for future reference.

Correct sentence:

"I shall wait here until he comes."

Explanation

“Excellent” begins with a vowel sound, so the correct article is “an”.

Correct sentence:

"That person did an excellent job while he worked for us."

Explanation

The sentence refers to a period from the past until now.

Present perfect tense is required:

"My sister had an accident two years ago and she has not driven since."

Explanation

Reported speech requires past perfect for an action completed earlier.

Correct sentence: “Ahmed said that his friends had betrayed him.”

Explanation

Explanation

With is a preposition here.

We generally use with before influence.

He got the job with influence اس نے اثر و رسوخ سے کام حاصل کیا