Firing is the present participle of fire.
Being is the present participle. The past participle is been.
Getting is the present participle of get.
The present participle is doing.
The present participle is choosing.
The present participle is walking.
Firing is the present participle of fire.
The present tense of fire is:I/You/We/They fire.He/She/It fires.The present participle is firing.
Being is the present participle. The past participle is been.
Getting is the present participle of get.
The present participle is doing.
Presenting is the present participle of present.
Presenting is the present participle of present.
The present participle is choosing.
The present participle is walking.
The present participle is cleaning.
The present participle is seeking.
The present participle of "understand" is "understanding."