Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. He is an interesting speaker but tends to go off at a tangent.

change the subject immediately
forget things in between
go on at great length
become boisterous

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Idiom
To cool one's heel

To remain in a comfortable position
To be kept awaiting someone
To give no importance to someone
To rest for sometime

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