The word "student's" is a possessive noun.
it is an English speech
The word students is a plural noun. It is the singular of student.
Underlined is a verb and an adjective. Verb (past tense of underline): The students underlined the title of the book in their reports. Adjective: an underlined word
The part of speech that the word my is used as is an adjective.
The part of speech for this particular word is a noun.
Adverb
The part of speech for the word civilian is English grammar.
The part of speech for the word diplomacy is a noun.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word "boulevard" is a noun.
The word speech is a noun.
Adjective.