问题描述:
_______ the terrible scene of the traffic accident,the little boy burst out crying
A.At seeing
B.On seeing
C,To see
D.Seen
选哪个,为什么?求详解
A.At seeing
B.On seeing
C,To see
D.Seen
选哪个,为什么?求详解
问题解答:
我来补答展开全文阅读