Try every possible way Leave no stone unturned = to do everything you can to achieve a good result. Look at the sentence : He left no stone unturned in his search for his natural mother.

Correct Option: A

Try every possible way Leave no stone unturned = to do everything you can to achieve a good result. Look at the sentence : He left no stone unturned in his search for his natural mother.

A long time Donkey’s years = a very long time Look at the sentence : We have been close friends for donkey’s years.

Correct Option: B

A long time Donkey’s years = a very long time Look at the sentence : We have been close friends for donkey’s years.

A new and additional distinction Feather in one’s cap = an achievement to be proud of. Look at the sentence : It is a feather in your cap when you are asked to be captain.

Correct Option: B

A new and additional distinction Feather in one’s cap = an achievement to be proud of. Look at the sentence : It is a feather in your cap when you are asked to be captain.

Suspect something wrong Smell a rat = begin to suspect trickery or deception. Look at the sentence : When she died, investigators were called in who soon smelt a rat.

Correct Option: A

Suspect something wrong Smell a rat = begin to suspect trickery or deception. Look at the sentence : When she died, investigators were called in who soon smelt a rat.

Rapidly By leaps and bounds = to become larger quickly; by large movements forward. Look at the sentence : The profits of my company are increasing by leaps and bounds.

Correct Option: B

Rapidly By leaps and bounds = to become larger quickly; by large movements forward. Look at the sentence : The profits of my company are increasing by leaps and bounds.