Apostrophes and Ellipses

sock ,shirt , shorts, smores, Sam the puppy, and soup

p.s. r u still in pre-k or something

A contraction

Its and yours are the possessive pronouns for it and you. Note that possessive pronouns do not use apostrophes.

That depends on the use of the word.

Girls and boys are the plural forms of girl and boy, so correct would be for example: "All girls in my class are so short."

Girl's and boy's are the genitive singular forms, so correct would be: "This boy's shoes are so dirty."

That depends. If you are referring to the decade, then it is spelled 1930s. If you are referring to something just from the year 1930, then it is 1930's. For example:

Life was not easy in the 1930s.

All Quiet On The Western Front was 1930's Best Picture winner at the Oscars.

"Tomorrow's weather is meant to be fine" is a correct way to use it.

contraction for who would: who'd

Examples:

My mother's bag is red.

Ross' house is a mansion.

Using Octopus's garden is correct if the Octopus here refer to a name and not to octopus, a mollusk.

It should be Mother's Day.

It should be Mr. and Mrs. Smith's house.

If I recall correctly, around 1980 a magazine published an article about Ralph, stating he used a Fender Twin.

It is an apostrophe that is used in a word like couldn't. Instead of could not you use an apostrophe to make it in to couldn't and that is how is used. It can also be used with numbers, like for example 1954 using an apostrophe like this '54 makes it an apostrophe that shows contraction.

No

The missing letter is d. Ma'am comes from the word madam.

An ellipsis (...) takes the place of any words you don't want to include. It works sort of like an apostrophe, but for words, not just letters.

• The member's [one member's] subscription has been paid.
• The members' [more than one members'] subscriptions have been paid.

it'as

A noun that shows ownership using an apostrophe is a possessive noun.

couldn't

the 'o' isn't there so an apostrophe takes it's place!

Between the second d in dad and the s in dad. dad's mug.

' Apostrophe: used in contractions and to show possession [] Brackets: Set apart or Interject text within other text
: Colon: to introduce something
, Comma: to separate things such as in a sequence
Dashes: to create a range or for a minus symbol
Ellipsis: a mark creating an intentional omission of a word, to trail off at the end of a sentence, to pause in speech, or to indicate an unfinished thought
! Exclamation Mark: Comes after interjection or exclamation to indicate strong volume and high feelings
. Period: to end a sentence
<> Guillemets: indicate speech, fast forward/rewind
- Hyphen: join words or separate syllables
? Question Mark: Replaces a period at the end of an interrogative sentence
" " ' ' Quotation Marks: Quotation, speech, phrase, word
; Semicolon: separate closely related independent clauses, serial commas
/ Slash/Solidus: replace hyphen/dash

No. Wed is a verb meaning get married. We'd is a contraction, though. (Notice the apostrophe.) We'd is a contraction of we had or we would.

Yes.
Greetings of the season => Season's Greetings. Possessive usage.