17. GWD25-Q17 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. A. Until recently, the Inuit people led a nomadic existence, sheltering B. During recent times, the Inuit people lead a nomadic existence, sheltering. C. In the times that are recent, the Inuit people led a nomadic exis- tence, sheltered. D. Up until recently, the Inuit people, leading a nomadic exis- tence, have sheltered. E. Until recent times, leading a nomadic existence, the Inuit people were sheltered.ANS：A why A?我选了E,我怎么觉得E更好，untill recent times没有错呀，顺便问问shelter怎么翻译，似乎有很多种？ | 
