gwd 1-30

No.12 GWD1-30:

The ancient Anasazi harvested such native desert vegetation as the purple-flowered bee plant, what they now commonly call wild spinach in northern Arizona and other parts of the southwestern United States.

A.       what they now commonly call

B.       a plant that they now commonly call

C.       now commonly called

D.       and is mow commonly called

E which it is now commonly called

这里明明有now为什么还用called？为了表示被动？那为什么省略掉is？

同问啊，请牛牛们解答

这不是关键问题，  奇怪的是 commonly called 不会误解成 ancient anazzi + commonly called ? 

done and doing mostly modiflied the subject of previous sentence.

Or ，done and doing can modiflied any nouns in previous sentence, as long as there is no misleading?