Choose the correct preposition.
1. There was no mobile phone signal when they went through/ across the tunnel.
2. She walked along/across the street until she got to the post-office.
3.The little girl suddenly ran across/through the road.
4.They were driving towards/over the forest.
5.The children ran over/through the bridge and along/towards the path.
6. What palaces of interest can you see if you fly over/along Washington D.C?