challenges

Status
Not open for further replies.

belly_ttt

Senior Member
Joined
Jul 19, 2007
Member Type
Student or Learner
The new discovery, along with previous reports of other 11000-year-old human sites in South America, __ the theory that the first New World settlers immediately trekked inland after crossing the Bering Strait from Asia, mainly hunted big game, and moved into South America along the Andes Mountains.a) challengesb_ challengingThe answer turns out to be b but I think a is OK. why not a but b?
 

Anglika

No Longer With Us
Joined
Oct 19, 2006
Member Type
Other
I don't know. #a is correct.

The logic of the sentence is not carried through with "challenging".
 
Status
Not open for further replies.
Top