CA. That's been answered here before.
PQ is not the abbreviation for any country. It is important to provide the correct abbreviation or context for a more accurate answer.
The abbreviation would be I've.
correct abbreviation for sounds
HQ is the correct abbreviation.
Sun. is the correct abbreviation for Sunday.
The abbreviation for Mile is "Mi"
The correct abbreviation for October is: Oct.
The correct abbreviation for liters is "L".
The correct abbreviation for court is "ct."
The correct abbreviation for ounces is "oz."
The correct abbreviation for "near" is "nr."
The correct abbreviation for continued is "cont."