It's a Sunday morning.Lin Tao has no school today.He has breakfast and goes out.He is going to his grandfather's home.Now he is on his way there.He walks and walks.Then he comes to a river.The river is not wide(宽).There is a board(木板)over the river.Lin Tao walks onto the board.Suddenly(突然)he falls(落)into the river.“Help, help!”Lin Tao is crying(喊).But no one comes.There is no one near here.He waits(等)in the water for some time.But nothing happens(发生).He begins to get up.Aha, the river is not very deep(深).It only comes to half his legs.
(1)
Lin Tao goes to his grandfather's home on a ________.