List-I (Idioms)

List-II (Meanings)

(A) get into the swing of things

(I) follow the wrong course of action

(B) bark up the wrong tree

(II) to fit into the rhythm of things

(C) build something on sand

(III) expose someone's deceitful or illegal schemes

(D) blow the whistle on someone

(IV) to try to establish something without enough support

List-I (Idioms)

List-II (Meanings)

Explanation                   

(A) get into the swing of things

(II) to fit into the rhythm of things

To become comfortable and familiar with a new routine or activity.

(B) bark up the wrong tree

(I) follow the wrong course of action

To pursue a mistaken line of inquiry or make a wrong choice; to direct one's attention or efforts toward the wrong person or thing.

(C) build something on sand

(IV) to try to establish something without enough support

To establish something (like a plan or organization) on an unstable or unreliable foundation.

(D) blow the whistle on someone

(III) expose someone's deceitful or illegal schemes

To reveal something illegal or wrong to the public or to an authority (often referring to whistleblowers).