Lgro was the first person______a modern helicopter.A.to develop B.the development of C.developing D.developed请解释一下，谢谢
热心网友
A. 序数词+ 名词＋ to do sth ， 不定式做后置定语 He is always the first to come and the last to leave. 他总是第一个来最后一个离开.
热心网友
The answer is C.因为这是一个过去时态,A表示未来时态,显然不是.B是名称,与后面不搭配.D是被动语态,故不对.C表示已经发生过.
热心网友
be the first sth to do sth!so A is right|!
热心网友
A