Explanation

Correct sentence: "It was kind of you to help."

"Of" is used with adjectives describing someone's behavior.

Explanation

Explanation

In the given sentence the focus needs to be on the verb ‘trust’.

The preposition ‘in’ is commonly used to speak about a state, condition or abstract concept.

Explanation

We generally use in after succeed.

In is a preposition here.

Succeed in something means کسی کام میں کامیاب ہونا

Explanation

The word “abide” takes the preposition “by”.

Abide means قبول کرنا، مان لینا

Explanation

Preside over is a phrasal verb.

Preside over means صدارت کرنا

He will preside over the function. 

Explanation

I shall abide by my promise.

میں اپنے وعدے پر قائم رہوں گا۔

This means to adhere to or follow the commitment made.

Explanation

Here next week indicates future. 

This sentence belongs to Future Perfect Tense.

Have + third form of a verb is used in this tense. 

By next week we shall have completed the course. 

اگلے ہفتے تک ہم کورس مکمل کر لیں گے۔

agm.5.3.23

Explanation

This structure describes how you travel somewhere.

by + train, car, boat, plane, taxi, bus, coach

Explanation

In general, in is used to indicate a place or location inside or inside something.

We went swimming in the lake.

You have a house in the countryside. Albuquerque is located in New Mexico.