Match the idioms with their definitions. There are three extra definitions (you don't need to use them).

Write one letter in each gap.

By oneself [ ]

To make oneself clear [ ]

To enjoy oneself [ ]

To behave oneself [ ]

A. To serve food on one's own.

B. To speak loudly enough to be understood.

C. To act in a proper way.

D. To have a good time.

E. Alone; without any help from other people.

F. To do something on one's own.

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