Explanation

Generally, insist takes preposition on.

Insist on something means کسی بات پر اسرار کرنا

Explanation

Through means via.

Through indicated movement from one end to the other end.

The train went through the tunnel.

Explanation

Put Up قیام کرنا

Put on پہننا

Put off ملتوی کرنا

Put out بھجانا

Put up with برداست کرنا

We put up at a cheap hotel.

Explanation

Hope means امید

Here Hope is a noun that is why of is used.

He has no hope of recovery. 

Explanation

Set in is a phrase which means to start.

Set In means شروع ہونا

Explanation

Generally, preposition At is used after the word Exult.

Exult means to be very happy or excited.

Exult means خوش یا پرجوش ہونا

It is natural for us to exult at our own success.

Explanation

Fall Down is phrasal verb which means گرپڑنا

Fell Down is the second form of Fall Down. 

The child fell down from a great height.

Explanation

Across has two different meanings.

For Example: She has been waiting for me across the road.

For Example: A tree fell across the railway line that caused an accident.

Explanation

He gave a talk on the causes of dengue fever.

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we use the "on" preposition because we talk  "on" causes of dengue fever

**

ND10-1-2023

Explanation

“To” is used after following verbs if the object is a “person”.

Say, suggest, speak, reply, explain, complain, talk, listen, write, report, pray and describe”.

He said to me not to worry.