Until recently, the Inuit people led a nomadic existence, sheltering in igloos, the ice-block domes that are peculiar to north-central Canada,and in structures made of stones, bones, driftwood, and skins. | Until recently, the Inuit people led a nomadic existence, sheltering | | During recent times, the Inuit people lead a nomadic existence, sheltering. | | In the times that are recent, the Inuit people led a nomadic exis-tence, sheltered. | | Up until recently, the Inuit people, leading a nomadic exis-tence, have sheltered. | | Until recent times, leading a nomadic existence, the Inuit people were sheltered. |
选D。我想问一下,为什么AB,sheltering作修饰语不可以? |