Explanation

"Broken down" means weakened or deteriorated, often due to stress or excessive work.

In this sentence, it indicates that his health has worsened because of hard work.

Explanation

The railway track runs across the river.

Across means from one side to another side.

Explanation

Part from someone کسی انسان سے الگ ہونا

Part with someone کسی چیز سے الگ ہونا

He parted with all his possessions. 

Explanation

• She has been working since morning.
• This indicates that she started working in the morning and continues to do so.

Explanation

Be worried about something means کسی چیز کے بارے میں فکر مند ہونا

میں اپنے امتحانات کیلئے فکرمند ہوں۔

Explanation

Generally the word afraid takes preposition of.

Afraid of snakes, afraid of dogs, afraid of animals etc.

Afraid of means خوفزدہ 

Explanation

Care About something means کسی کا خیال رکھنا، پرواہ کرنا

Explanation

She admitted me her mistake.

اس نے مجھے اپنی غلطی تسلیم کر لی۔

Me is best to keep the meaning of the original sentence.

me is an objective pronoun.

Explanation

Generally prefer is followed by To.

To is a preposition here.

Prefer means ترجیع دینا

I prefer tea to coffee. 

Explanation

'To answer accurately' will take 'to finish quickly' in the correct way.

Therefore 'finish quickly' is the correct choice.