【用戶】Astrocyte
【年級】高三上
【評論內容】The Marina District in San Francisco sustained(遭遇、遭受) heavy damage where ____ had been built on former bay land...空格前的where表示接下來要補述遭受重傷害的Marina District，A.搶救、拯救
【用戶】許武忠
【年級】高二下
【評論內容】where _______ had been built on former bay land，filled many decades earlier.下一句的filled land 是填充地的意思，人工填石升高海平面造出的地.這一句說____被建造(had been built)在數十年前(many decades earlier)填充(filled)的海灣地面上,空格裡面應該填一個名詞.廢墟ruins不會被建造, 只有structures(建築物)符合.