Until recently, the Inuit people led a nomadic existence, sheltering in

igloos, the ice-block domes that are peculiar to north-central LACE w:st="on">CanadaLACE>,

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 existence, sheltered.

D. Up until recently, the Inuit people, leading a nomadic existence, have sheltered.

E. Until recent times, leading a nomadic existence, the Inuit people were sheltered.

做题的时候选了A，答案是D

但是D第一：up until recently不知道是什么用法，第二，分词放在了主谓之间，不是有名的夹心修饰歧异么？

我也选得A

有谁能解答一下,为什么选D啊?

时态冲突