Well "It's" is always present tense because "it's" composed of the words it and is. And is, is present tense. As for "it" that depends on the following word.
i.e:
It was (past tense)
It is (present tense)
it has (Past tense)
it shall (present tense)
The words its and it's can be veryconfusing.
In spite of having an apostrophe, it's is a contraction that stands for it is:
Even though its does NOT have an apostrophe, it IS a possessive meaning "belonging to it".
Yes - are is a present tense plural 'be' verb.
The word industry doesn't have a past tense or a present tense as it is a noun.
"IT is happen" does not mean anything; "it is happening" is a Present Tense - a Continuous Present Tense, to be more specific (not a "word").
The present tense of crept is creep.
The present tense word for write is just "write" and past tense is wrote.
"Has" is in present tense. The past tense is "had".
The simple present tense is do.
The present tense form of the word "have" is "have".
The word "plays" is in present tense.
The word screams is present tense.
the word "was" is in the past, but the present tense of "was" is are
The word "you are" is used in the present tense. "You were" is used in the past tense.
The present tense word of "greet" is "greeting".
The present tense for the word "said" is "say."
The word 'ask' is in the present tense.
"received" is the past tense. The present tense of that word is "receive"
Present tense: are Past tense: were