15. At the railway station, the mother waved goodbye to her daughter until the train was _______.

　 A. out f sight　　　 B. out f reach　　　 C. out f order　　 D. out f place

14. He _____ football regularly for many years when he was young.

　 A. was playing　　　 B. played　　　 C. has played　　 D. had played

13. Her shoes ______ her dress; they look very well together.

　 A. suit　　　　 B. fit　　　　　 C. compare　　　　 D. match

12. The last time we had great fun was _____ we were visiting the Water Park.

　 A. where　　　　 B. how　　　　 C. when　　　　 D. why

11. Most air pollution is caused by the burning of ____ like coal, gas and oil.

　 A. fuels　　　 B. articles　　　　 C. goods　　　 D. products