这句话中的lead in 都是什么词性?spend some time leading in to a question

这句话中的lead in 都是什么词性?spend some time leading in to a question lead in to a question是什么意思 lead in lead in lead in to an answer什么意思..难道不应该是lead in an a lead in Sometimes we might even need to spend some times lea leading in to a question or request的中文意思是 Everyone should spend some time in 什么service it takes (sb.) some time to do sth.= sb.spend some time (in) It takes sb some time to do sth与Sb spend some time in doing 有没有spend some time in sth sb spend some time in doing sth 英语翻译Sometimes we might even need to spend some time leading spend some time in doing sth.这个短语中的in可以省略吧?