Are these sentences below interchangeable?
- "ThisThis is a good day." 2. It is a good day. 3. Today is a good day. 4. It is a good day today.
- "It is a good day."
- "Today is a good day."
- "It is a good day today."
As far as I can remember all of them can be used.
If we can use them all interchangeably, can I also replace "day" with "week", "month" and "year" in all those sentences? Like "This is a good year.", "It is a good year.". "This year is a good year.", "It is a good year this year." etc.