11.
It was after a long time that the police was able to lay the thief by the heels.

12.
The involvement of teachers in the scheme of education proves to be a mare's nest.

13.
He burnt his fingers by interfering in his neighbour's affairs.

14.
Akshay can turn his hand to anything.

15.
He always says that he will help, but when it comes to the crunch, he does nothing.