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He is leaving the country $for\, a\, good$.

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The class could not $keep\, a\, straight\, face$ on hearing the strange pronunciation of the new teacher.

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There has been $bad\ blood$ between the two communities even before shouting.

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The party stalwarts have advised the President $to\, take\, it\, lying\, down$ for a while.

Choose the alternative which best expresses the meaning of the highlighted idiom/phrase: "He intends $setting\ up$ as a lawyer in the adjoining district."

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It is no longer easy to $strike\ gold$ in Shakespeare's research since much work has already been done on him.