14. I find ____________ him all about it. A. necessary to te

14. I find ____________ him all about it. A. necessary to tell B. that necessary to C. necessary it to tell D. it necessary to tell 15. When he was in the office, he preferred ________ something ________ nothing. A. to do; than do B. to do; rather than C. doing; rather than doing D. doing; to doing 16. .How dirty the tables are! They need________. A. to clean B. clean C. cleaning D. cleaned 17. I'm sorry ____ so long, I forgot to tell you in advance where I had put my key. A. to keep you wait B. to keep you waiting C. to keep you waited D. to keep you waitting 18.They haven't decided when __________ for Shanghai. A. to be leaving B. to leave C. leaving 19. His father agreed __________ $ 4,000 for the car. A. with paying B. to paying C. to pay D. on paying 20. How long did you spend _______ your new house yesterday? A. to decorate B. decorate C. decorating D. decorated 21. It was great fun _________ a picnic on the hill. A. to have B. of having C. have D. had 22. A policeman saw two thieves ____ a girl's mobile phone on a bus and he caught them at once. A. to steal B. stealing C. stole D. stolen 23. It's bad for your eyes __________ computer games for a long time. A. plays B. to play C. play D. played 24. -Do you often hear John ________ in his room? -Yes. Listen! Now we can hear him ________ in his room. A. sing; to sing B. singing; singing C. sing; singing D. to sing; singing