Explanation

He tripped and fed Down the stairs

اس نے پھسل کر سیڑھیوں سے نیچے کو کھلایا

Down. We use down mostly as a preposition or adverb.

It means 'in or moving to a low or lower position or level': … Downwards, downward.

Explanation

Call someone in is a phrase which means مشکل وقت کسی کو مدد کیلئے بلانا

We call in the police.

Call in the investigating team. 

Call in the doctor.

Explanation

Usage of Against

Against = opposed to

Against = کے خلاف

He is against match fixing.

Against = in contract with

Do not lean against the wall.

Against = in direction opposite to

She was swimming against the tide.

Explanation

There are some students who want to attend the event.

We use are with students.

We use first form of verb with plural nouns. 

AGM  5.2.23

Explanation

 "It is time we went out" uses the past tense ("went") even though it refers to the present or immediate future. 

Explanation

Afraid is generally followed by preposition of.

Afraid of means خوفزدہ 

Explanation

He knows German and Italian besides Arabic.

Beside means قریب یا علاوہ

Besides means کے علاوہ

Explanation

The children were entrusted with the care of their uncle

بچوں کی دیکھ بھال ان کے چچا کے سپرد تھی۔

"with" is a preposition used to indicate someone's  possessing about  something

"with" is best to keep the meaning of the original sentence

Explanation

Accountable takes preposition to. 

Accountable to God means خدا کے سامنے جوابدہ ہونا

ND18-4-2023

Explanation

Generally amaze is followed by by.