66. What is the important distinction in the use of adverbs and adjectives?
67. What rule is to be observed in the use of negatives?
68. What is a preposition?
69. Where is it placed in the sentence?
70. What is a conjunction?
71. What is said of and and but?
72. How should we pair either, neither, or, and nor?
73. What is the rule about placing correlatives?
74. What is an interjection?
75. Does it make much difference where words are put in a sentence? Why?