Choose the correct preposition.

Nobody in our group has a genius _____ winning friends and convincing friends. 

Choose the correct preposition.

I am not obsessed _____ such ideas as you are.

Choose the correct preposition.

What you say has hardly any bearing _____ the lives of tribals.

Choose the correct preposition.

The insects are a great nuisance _____ us.

Choose the correct preposition.

He dispensed with the services _____ his dishonest clerk.

Choose the correct preposition.

No one can stop a man from doing a thing if he is really keen _____ it.

Directions: In the question given below, a sentence with a blank is given. Choose the alternative that completes the sentence grammatically and contextually.

I am angry with him _____ his carelessness.

Choose the correct preposition.
Men have made ships that can sail _____ the sea and fly _____ the air.

Choose the correct preposition.
There was no agreement _____ the great powers _____ a treaty to ban nuclear weapons.