几道语法题，希望大家帮看一下

xiangshurUID: 2159678

1。The plan connected the Hudson River with LaKe Earie by a canal was first proposed in the late eighteenth century.


2.Jet propulsion involves___of air and fuel ,which forms a powerful exhaulst.
  A:a mixture of igniting   B:the ignition of a mixture  

3.The 1983 Nobei prize in Mdedicine was awarded to Barbara McClintock for her experiments with maize and her discoveries regardless the nature of DNA.

答案：a b  d  

第一个不是用connecting? 因为主被动关系不对？  第二实在不懂。

hanflyUID: 195459

1plan (that is) connecting......
2mixture of air and fuel
3d  regardless of