20. Windows are used to let in light and _______ out cold. a. to keep b. keep c. keeping d. for keeping 21. It isn't worth while_______ her. a. marry b. to marry c. marrying d. to have married 22. She did nothing but_______ a. cry b. to cry c. to have cried d. crying 23. He can’t live without_______ here. a. being loved b. to love c. love d. loving 24. People are prevented from_______ to the polluted area. a. go b. going c. to go d. to have gone 25. Tourists are not allowed _______ in the Temple. a. to talk b. talk c. talking d. being talked 26. The teacher doesn't allow_______ dictionaries in the final examination. a. being used b. use c. using d. to use 27. The president agreed_______ the Agreement. a. to sign b. sign c. signing d. to have signed 28. He tried to avoid_______ my question. a. answer b. answering c. to answer d. to have answered 29. Paula has given up _______ to lose weight. a. try b. trying c. to try d. to have tried 30. We can't go on_______ like this. a. living b. live c. to live d. to be living 31. Don't keep_______ me while I'm talking. a. interrupt b. to interrupt c. interrupting d. to have interrupted 32. I can't imagine Bill _______ a motorbike. a. ride b. riding c. to ride d. to be riding 33. Sorry to keep you_______ so long. a. waiting b. wait c. to wait d. to have waited 34. She now regrets_______ it. a. say b. having said d. to say d. to have said 35. We decided_______ at home. a. to stay b. stay c. staying d. having stayed 36. Frank tends_______ too much. a. to have drunk b. drinking c. drink d. to drink 37. He doesn't want_______ a. to know b. know c. knowing d. to be knowing 38. I don’t advise anybody_______ in that hotel. a. stay b. to stay c. staying d. to have stayed 39. The mother made her child_______ the word a. repeat b. to repeat c. repeating d. to be repeating 40. My parents don't let me_______ out alone. a. go b. to go c. going d. to be going