1. The detective left no stone unturned to trace the culprit.
2. The authorities took him to task for his negligence.
3. In spite of the immense pressure exerted by the militants, the Government has decided not to give in.
4. Their business is now on its last legs.
5. He went back on his promise to vote for me.
6. By the skin of one’s teeth
7. Harp on
8. To be at daggers drawn
9. To get into hot waters
10. A fair crack of the whip