Final answer:
The subject of this question is English and it focuses on the correct use of ending punctuation marks in sentences.
Step-by-step explanation:
The subject of this question is English because it is asking about grammar rules related to punctuation marks at the end of sentences.
A period (.) is used at the end of a statement, a question mark (?) is used when asking a question, and an exclamation point (!) is used to show emphasis or surprise.
In the given sentences, the correct ending punctuation for each sentence is:
- ?
- .
- .
- !
- ?
- ?
Learn more about Ending punctuation marks in sentences