Many people miss Lei Feng because he was so ____ (help).
几年过去了,一条宽阔的沥青公路从北方延伸到南方。它像箭一样笔直,但只在一个地方弯曲成马蹄形。
坐车过往这里的人不约而同地赞叹道:“筑这条路的人一定有一颗高尚的心。”
The work is ________ hard and the children can't finish it themselves.