Can someone teach me korean please im not very good at learning stuff quickly/ by myself

According to the elements of style, which sentence is written in active voice?

Hello, i need you to me my teacher sent me a letter to the reader and in the letter i have to put in. why do i want to get 3 points? and he said that of the 4 arguments choose one and that with that argument write the letter these are the arguments: addition: also that, even that, too. comparison: more than, less than, as much as. opposition: but, however. security: without a doubt, of course. those are the 4 arguments and i have to choose just one, i need it it's very urgent you it's about language and literature

David works in the police force. he is mainly in charge of crime prevention, detection, and maintaining order. he works at the rank of a .