no
EXPY. or EXPR. with or without the periods.
No.
Ms is not an abbreviation, therefore no period. If anyone feels it is an abbreviation, please state what it is an abbreviation of. I think I ended the last sentence incorrectly.
No
No.
no
Mr. and Mrs. take a period, but Miss does not at it is not an abbreviation.
You don't. and pkwy. is the abbreviation for parkway, if that's what you meant.
No, "Mr" does not require a period after it. It is considered an abbreviation, and in formal writing, the period is typically omitted.
No, it doesn't require a period.
EXPY. or EXPR. with or without the periods.
Miss does not require a period after it, it is not an abbreviation. MS can be used for any woman regardless of marital status.
It is widely accepted that the final period after the abbreviation does double duty in ending the sentence and the abbreviation at the same time.
In correct English, every abbreviation should have a period at the end
no
No
No.