Choose the correct answer.

37. This fascinating book covers some of the most _________ crimes of the twentieth century.

38. The government should do more for _________ people.

39. Ivan tells me he really _________ himself at your barbecue last week.

40. I know we had an argument, but now I'd quite like to _________.

41. Harry and Sam both denied that the fight was their _________ .

42. The curtain went up, the _________ grew silent and the actors on stage began to speak.