是(有生命的)，是，存在

1. to be (animate), to be, to exist

intransitive verb Godan verb with 'ru' ending word usually written using kana alone humble (kenjougo) language

正在……

2. to be ...-ing

Godan verb with 'ru' ending auxiliary verb

(竟敢)做

3. to (have the audacity to) do

auxiliary verb Godan verb with 'ru' ending