Explanation

The man whom you met yesterday is an anchorperson.

 جس آدمی سے آپ کل ملے وہ ایک اینکر پرسن ہے۔

"Whom" is used to refer to the object ( Man) of a verb  (anchor) 

ND18-4-2023

Explanation

Battle of Khyber fought against Jews of Khyber.

Battle of Khyber began in Muharram of 7/628.

Hazrat Ali killed Marhab while conquering the Qamus fort.

Explanation

Bait e Rizwan/Pledge of the TreeIn was made 628/6 AH.

When Prophet Muhammad ﷺ perform the ritual pilgrimage of Umrah but Quraysh denied. Prophetﷺ sent Hazrat Usman ibn Affan as his envoy to meet with the leaders of Quraysh and negotiate their entry into the city. But Hazrat Usman not come back long time, believe that Hazrat Usman had been killed

On this occasion, Muhammad gathered his nearly 1,400 Sahaba and called them to pledge to fight until death and revenge the death of Hazrat Usman

Explanation

Prophet Muhammadﷺ gave His Last Sermon on the 9th of Dhul Hijjah in the year 10 Hijri or 632 AC in the valley of Arafat on His first and last Hajj. 

Explanation

Penicillin works best on gram-positive bacteria by inhibiting peptidoglycan production, making the cells leaky and fragile

The cells burst open and are much easier for the immune system to break down, which helps the sick person heal more quickly.

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Related Question

Penicillin was discovered by Alexander Flaming In 1928

Penicillin was the first true antibiotic

Explanation

We use at for a specif location.

At is a preposition here.

Who is waiting at the door?

Explanation

The phrase "weal and woe" means joys and sorrows.

It refers to both the good and bad, the fortunate and unfortunate, or the happy and sad aspects of life. 

"Ups and downs" is also a good way to describe the fluctuations in life, but "joys and sorrows" more directly captures the meaning of "weal and woe". 

Explanation

Tense: Present indefinite tense

Active: Why does an officer neglect his duties?  

Passive: Why are the duties neglected by an officer?

Explanation

 Flock of birds is a singular word which means پرندوں کا جھنڈ

AGM 09-2-2023

Explanation

Generally prefer is followed by To.

To is a preposition here.

Prefer means ترجیع دینا

I prefer to go by air.