what are punctuation mark
periods(.)- is used to note the end of a declarative sentence.
Example: I see the house.

exclamation point(!)- is used to show exciment or emphasis.
Example: it is cold!

Question mark(?)-Is used at the end of a question. Example: When are we going?

Commas(,)-is used to separate phrases or items in a list.
example: She brought a milk, eggs, and bread.​