1.They went there by bike.
2.They wanted to go back to home.
3.The students were going to West Hill.
4.They came back to school by bus.
5.They heard many bird singing.
6.There were some birds singing on the trees.
7.They ate lunch there.
8.They wanted to go there again.
9.The girls danced and sang some beautiful songs.
10.They were thought very tired.
11.It took us two hours to go there.
12.They had a short rest by the road.
13.They arrived at the foot of the mountain.
14.It sound very great.
15.The food was good.
16.They climb the mountains.
17.They arrived at the foot of the hill at 10:30
18.Although they were tired, they were very happy.
19.They heard many birds singing in the hill.