Match the idioms with their definitions. There are two extra definitions.

Write one letter in each gap.

To make oneself clear [ ]

To enjoy oneself [ ]

To behave oneself [ ]

A. To act in a proper way.

B. To have a good time.

C. To perform a task alone, without any help from other people.

D. To do something on one's own.

E. To be understood (usually when speaking aggressively).