You can do either. Past tense is more popular, although some well known books such as The Hunger Games and Monsters of Men have used present tense. When present tense is used though, the books are usually written in first person aswell.
Have is present tense. The past tense is had.
"Has" is the present tense form of the verb "have." The past tense form of "has" is "had."
Yes, "is" is present tense. The past tense form of "is" is "was."
"Have" can be used as both a present tense verb (e.g., "I have a book") and a past tense verb (e.g., "I had a book").
present: walk past: walked present: eat past: ate present: speak past: spoke
"DO" can be present tense (third person singular form is "does") as well as past tense (past simple form is "did").
Past tense I had Present tense I have Future Tense I will have
"Wore" is the past tense of the verb "wear." It is used to indicate that someone has already used or had on an item of clothing in the past.
"is' is present tense. For past tense use was or were.
The word "do" is used in both present and past tenses. In present tense, it is used as an auxiliary verb to form questions and negatives (e.g. Do you like coffee? I do not know). In past tense, it can be used as the past tense of "do" (e.g. He did his homework).
Present tense: lead Present participle: leading Past tense: led Past participle: led
Present tense is used to describe things that are happening now or are generally true. Past tense is used to describe things that have already happened.