GWD-18-Q41困惑求助

At the turn of the twentieth century, forest covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them domesticated and performing various essential tasks.

A.    covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them

B.    covering as much as 90 percent of Thailand accommodated as much as 300,000 elephants, and a third of them were

C.    covered as much as 90 percent of Thailand and accommodated as much as 300,000 elephants, with a third

D.    covered as much as 90 percent of Thailand and accommodated as many as 300,000 elephants, a third of them

E.     covered as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, with a third of them

困惑：两个逗号间的插入语一定要是主谓完整的句子吗？不然，A错在哪里呢？

c中的逗号间就是句子的主体部分。

a如果主体部分在后面的话，前面forest就多余了，所以根本就不是句子呀

lz认为选项D)有什么问题吗？核心句子forest covered ... and accommodated ... + 同位语。

A)里没有谓语动词。