Wheb you are brainstorm, you think about the topic and write down every word of idea you can think of related to that topic [in] as short a time as possible.
왜 in이있나요? 전치사의목적어두 없는거 아닌가요? as이하가 부사잖아요
근데 전치사의목적어자리를받을 괌계대명사도 없구
that은 지시사로 그냥 that topic받는거같구

in이왜있는지말해주세요~~