Last Saturday I went to the Great Wall with some of my friends. It was a 1.______(sun) day. On our way up, we saw many volunteers(志愿者)2.______(keep) order in the sun. They helped the elders 3.______ their bags, and 4. ______(take) photos for some tourists and answered people’s questions. Though they were very 5.______(tire), they didn’t stop to have a rest. We were 6.______(deep) moved when we saw this.
　　Just at the moment, we saw 7. ______little boy standing alone and crying. We went over and asked what 8.______(happen) to him. From his answer we knew that he couldn’t find his mother. We told him not to worry about it and then we tried to get in touch with his mother with the phone number he gave us. Twenty minutes 9. ______, his mother turned up. When she saw her son, she was very excited and thanked 10. ______ (we) with tears in her eyes.