【求高人讲解英语句子anunknownelderlywomanapperedinatvadvertisement{inwhich}shelookedataverysmallhamburgerandcomplained这里的inwhich=where还是complain后的介词in提前】

　　求高人讲解英语句子

　　anunknownelderlywomanapperedinatvadvertisement{inwhich}shelookedataverysmallhamburgerandcomplained

　　这里的inwhich=where还是complain后的介词in提前