【Emma Hsu】評論
a 選項錯在哪呢
【Lisa Ting】評論
Ecologists often study issues (____ the effects of human activities upon populations and ecosystems).issues(複數)(事物)--關係代名詞which/ that +動詞 relate to所以 which relate to= that relate to
【Lisa Ting】評論
which(S'= issues物) relate(v') to= that (S'= issues物) relate(v') toa 選項錯在哪呢?---- whom relate to---- (1) who (S'= 人) relate(v') to ------ (2) whom + S' + relate to