Midterm test

According to the stability of articulation English vowels are subdivided into …
91. English monophthongs are…
92. English diphthongs are…
93. Strong, clear and distinct English diphthong is called …
94. Rather weak English diphthong is called …
95. English diphthongoids are…
96. Name the three stages of articulation of a speech sound?
97. Two principal ways of joining two adjacent speech sounds are …
98. What is the merging of stages?
99. What is the interpenetration of stages?
100. What types of modification are there in connected speech?