Capitalizing Personal Titles and Family Relationship Titles

Which word should be capitalized in the following sentence:

For her birthday, my uncle Dave gave aunt Bonnie a pair of earrings.

(a)  

Should the word GRANDPA be capitalized in the following sentence:

My grandpa owns stables where he boards and trains horses.

Should the word MAYOR be capitalized in the following sentence?

On Thursday, mayor Wilkins will be visiting our school.

Should the word PRINCIPAL be capitalized in the following sentence:

Each morning, the principal reads the announcements.

In which sentence should the word COMMISSIONER be capitalized?

Should the word DAD be capitalized in the following sentence?

"Please ask Carl whether he'd like to spent the night here," said dad.

Which words should be capitalized in the following sentence? CHECK ALL THAT APPLY

My mom wrote a note to excuse me from class for my appointment with doctor Lanier.

Which word(s) should be capitalized in the following sentence?

When you see mrs. davenport, please ask her if she has seen my mom.

(a)  

Which word(s) should be capitalized in the following sentence:

Is that a drawing of president washington on the one-dollar bill?

(a)  

Which word(s) should be capitalized in the following sentence:

As Douglas approached the table, he said, "Good afternoon, uncle."

(a)