43. What is the interrogation point used for?

44. Give the rules for the use of the interrogation.

45. What is the exclamation point used for?

46. Give the rules for the use of the exclamation.

47. What is the apostrophe used for?

48. Give the rules for the use of the apostrophe.

49. What is the use of the apostrophe in past participles?

50. What is said of the use of the apostrophe in such abbreviations as Dep’t?

51. What is the hyphen used for?

52. What are quotation marks used for?