几道SAT语法题求助

几道SAT语法题求助
1. Because they build nests on telephone poles as readily as they do in trees, ospreys adapting well to various environments. 为什么Adapting错了?


2.Visitors are quick to notice that the main building of the critically acclaimed Denver Art Museum consisting of geometric, titanium-clad projections that resemble Rocky Mountain peaks. 为什么 Consisting错了?

什么时候要加ING什么时候不加啊?都要晕了.


3.Although both birds are known for their distinctive songs, but the rufous songlark has a sweeter song than has the brown songlark. Although both怎么错了?


4.For years historians claimed that pasta was introduced to Europe around 1295; however, archaeologists have uncovered what appears to be pasta-making devices that date back even earlier. 为什么What appears to be有错误?

谢谢啦!