GWD-25-17

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 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.

选了A，答案是D

up until recently不知道是什么用法，分词放在了主谓之间，修饰歧义？

A里的

过去时led

和untill recently我觉得不满意

应该是D

我觉的改用现在时

untill recently应该时接完成时

所以我觉得led不对

应该用have led

until recently Phil Sayer was one of the biggest telecoms customers in the UK.

until recently 后跟过去式