Last week we went lo the countryside to have a picnic．We bought some sandwiches，fruits and water for lunch．We started out quite early before there was too much traffic．After two hours' driving，we came to a nice place．It was at the foot of a hill and near a river，with some large trees beside it．As it was a very hot day，we parked the car under a large tree and went for a swim in the river．The water was refreshing．After having a swim we had lunch in the cool shade under the trees．

Then we went for a walk．We saw some beautiful birds and butterflies．After walking for about an hour we returned to the car．However，we couldn't get the car started．Finally we had to push the car off the road and wait for help．Of course，the car's breaking down spoilt（破坏）our picnic in the end!

66．When did they go to the countryside？ 　　

67．How long did it take them to get to the fool of the hill？ 　　

68．How was the weather that day？ 　　

69．What did they see when they went for a walk？    　

70．Why did they have to push the car off the road？